1 files changed, 219 insertions, 163 deletions

diff --git a/WebKit/chromium/src/WebDevToolsAgentImpl.cpp b/WebKit/chromium/src/WebDevToolsAgentImpl.cpp
index 9ce35b4..1a65bfe 100644
--- a/WebKit/chromium/src/WebDevToolsAgentImpl.cpp
+++ b/WebKit/chromium/src/WebDevToolsAgentImpl.cpp
@@ -38,32 +38,37 @@
 #include "EventListener.h"
 #include "InjectedScriptHost.h"
 #include "InspectorBackend.h"
+#include "InspectorBackendDispatcher.h"
 #include "InspectorController.h"
 #include "InspectorFrontend.h"
 #include "InspectorResource.h"
 #include "Node.h"
 #include "Page.h"
+#include "PageGroup.h"
 #include "PlatformString.h"
 #include "ProfilerAgentImpl.h"
 #include "ResourceError.h"
 #include "ResourceRequest.h"
 #include "ResourceResponse.h"
+#include "ScriptDebugServer.h"
 #include "ScriptObject.h"
 #include "ScriptState.h"
 #include "ScriptValue.h"
 #include "V8Binding.h"
-#include "V8InspectorBackend.h"
 #include "V8Proxy.h"
 #include "V8Utilities.h"
 #include "WebDataSource.h"
 #include "WebDevToolsAgentClient.h"
 #include "WebDevToolsMessageData.h"
+#include "WebDevToolsMessageTransport.h"
 #include "WebFrameImpl.h"
+#include "WebRect.h"
 #include "WebString.h"
 #include "WebURL.h"
 #include "WebURLError.h"
 #include "WebURLRequest.h"
 #include "WebURLResponse.h"
+#include "WebViewClient.h"
 #include "WebViewImpl.h"
 #include <wtf/Noncopyable.h>
 #include <wtf/OwnPtr.h>
@@ -86,9 +91,7 @@ using WebCore::ScriptObject;
 using WebCore::ScriptState;
 using WebCore::ScriptValue;
 using WebCore::String;
-using WebCore::V8ClassIndex;
 using WebCore::V8DOMWrapper;
-using WebCore::V8InspectorBackend;
 using WebCore::V8Proxy;
 
 namespace WebKit {
@@ -102,34 +105,109 @@ void InspectorBackendWeakReferenceCallback(v8::Persistent<v8::Value> object, voi
     object.Dispose();
 }
 
-void SetApuAgentEnabledInUtilityContext(v8::Handle<v8::Context> context, bool enabled)
-{
-    v8::HandleScope handleScope;
-    v8::Context::Scope contextScope(context);
-    v8::Handle<v8::Object> dispatcher = v8::Local<v8::Object>::Cast(
-        context->Global()->Get(v8::String::New("ApuAgentDispatcher")));
-    if (dispatcher.IsEmpty())
-        return;
-    dispatcher->Set(v8::String::New("enabled"), v8::Boolean::New(enabled));
-}
-
-// TODO(pfeldman): Make this public in WebDevToolsAgent API.
-static const char kApuAgentFeatureName[] = "apu-agent";
-
-// Keep these in sync with the ones in inject_dispatch.js.
-static const char kTimelineFeatureName[] = "timeline-profiler";
 static const char kResourceTrackingFeatureName[] = "resource-tracking";
+static const char kTimelineFeatureName[] = "timeline-profiler";
+static const char kApuAgentFeatureName[] = "apu-agent";
 
 class IORPCDelegate : public DevToolsRPC::Delegate, public Noncopyable {
 public:
-    IORPCDelegate() { }
+    IORPCDelegate() : m_transport(0) { }
+    explicit IORPCDelegate(WebDevToolsMessageTransport* transport) : m_transport(transport) { }
     virtual ~IORPCDelegate() { }
     virtual void sendRpcMessage(const WebDevToolsMessageData& data)
     {
-        WebDevToolsAgentClient::sendMessageToFrontendOnIOThread(data);
+        if (m_transport)
+            m_transport->sendMessageToFrontendOnIOThread(data);
+    }
+
+private:
+    WebDevToolsMessageTransport* m_transport;
+};
+
+class ClientMessageLoopAdapter : public WebCore::ScriptDebugServer::ClientMessageLoop {
+public:
+    static void ensureClientMessageLoopCreated(WebDevToolsAgentClient* client)
+    {
+        if (s_instance)
+            return;
+        s_instance = new ClientMessageLoopAdapter(client->createClientMessageLoop());
+        WebCore::ScriptDebugServer::shared().setClientMessageLoop(s_instance);
+    }
+
+    static void inspectedViewClosed(WebViewImpl* view)
+    {
+        if (s_instance)
+            s_instance->m_frozenViews.remove(view);
+    }
+
+    static void didNavigate()
+    {
+        // Release render thread if necessary.
+        if (s_instance && s_instance->m_running)
+            WebCore::ScriptDebugServer::shared().continueProgram();
+    }
+
+private:
+    ClientMessageLoopAdapter(PassOwnPtr<WebKit::WebDevToolsAgentClient::WebKitClientMessageLoop> messageLoop)
+        : m_running(false)
+        , m_messageLoop(messageLoop) { }
+
+
+    virtual void run(Page* page)
+    {
+        if (m_running)
+            return;
+        m_running = true;
+
+        Vector<WebViewImpl*> views;
+
+        // 1. Disable input events.
+        HashSet<Page*>::const_iterator end =  page->group().pages().end();
+        for (HashSet<Page*>::const_iterator it =  page->group().pages().begin(); it != end; ++it) {
+            WebViewImpl* view = WebViewImpl::fromPage(*it);
+            m_frozenViews.add(view);
+            views.append(view);
+            view->setIgnoreInputEvents(true);
+        }
+
+        // 2. Disable active objects
+        WebView::willEnterModalLoop();
+
+        // 3. Process messages until quitNow is called.
+        m_messageLoop->run();
+
+        // 4. Resume active objects
+        WebView::didExitModalLoop();
+
+        // 5. Resume input events.
+        for (Vector<WebViewImpl*>::iterator it = views.begin(); it != views.end(); ++it) {
+            if (m_frozenViews.contains(*it)) {
+                // The view was not closed during the dispatch.
+                (*it)->setIgnoreInputEvents(false);
+            }
+        }
+
+        // 6. All views have been resumed, clear the set.
+        m_frozenViews.clear();
+
+        m_running = false;
+    }
+
+    virtual void quitNow()
+    {
+        m_messageLoop->quitNow();
     }
+
+    bool m_running;
+    OwnPtr<WebKit::WebDevToolsAgentClient::WebKitClientMessageLoop> m_messageLoop;
+    typedef HashSet<WebViewImpl*> FrozenViewsSet;
+    FrozenViewsSet m_frozenViews;
+    static ClientMessageLoopAdapter* s_instance;
+
 };
 
+ClientMessageLoopAdapter* ClientMessageLoopAdapter::s_instance = 0;
+
 } //  namespace
 
 WebDevToolsAgentImpl::WebDevToolsAgentImpl(
@@ -142,6 +220,8 @@ WebDevToolsAgentImpl::WebDevToolsAgentImpl(
     , m_resourceTrackingWasEnabled(false)
     , m_attached(false)
 {
+    DebuggerAgentManager::setExposeV8DebuggerProtocol(
+        client->exposeV8DebuggerProtocol());
     m_debuggerAgentDelegateStub.set(new DebuggerAgentDelegateStub(this));
     m_toolsAgentDelegateStub.set(new ToolsAgentDelegateStub(this));
     m_apuAgentDelegateStub.set(new ApuAgentDelegateStub(this));
@@ -150,6 +230,7 @@ WebDevToolsAgentImpl::WebDevToolsAgentImpl(
 WebDevToolsAgentImpl::~WebDevToolsAgentImpl()
 {
     DebuggerAgentManager::onWebViewClosed(m_webViewImpl);
+    ClientMessageLoopAdapter::inspectedViewClosed(m_webViewImpl);
     disposeUtilityContext();
 }
 
@@ -161,25 +242,20 @@ void WebDevToolsAgentImpl::disposeUtilityContext()
     }
 }
 
-void WebDevToolsAgentImpl::unhideResourcesPanelIfNecessary()
-{
-    InspectorController* ic = m_webViewImpl->page()->inspectorController();
-    ic->ensureResourceTrackingSettingsLoaded();
-    String command = String::format("[\"setResourcesPanelEnabled\", %s]",
-        ic->resourceTrackingEnabled() ? "true" : "false");
-    m_toolsAgentDelegateStub->dispatchOnClient(command);
-}
-
 void WebDevToolsAgentImpl::attach()
 {
     if (m_attached)
         return;
+
+    if (!m_client->exposeV8DebuggerProtocol())
+        ClientMessageLoopAdapter::ensureClientMessageLoopCreated(m_client);
+
     m_debuggerAgentImpl.set(
         new DebuggerAgentImpl(m_webViewImpl,
                               m_debuggerAgentDelegateStub.get(),
                               this));
-    resetInspectorFrontendProxy();
-    unhideResourcesPanelIfNecessary();
+    createInspectorFrontendProxy();
+
     // Allow controller to send messages to the frontend.
     InspectorController* ic = inspectorController();
 
@@ -194,7 +270,7 @@ void WebDevToolsAgentImpl::attach()
         }
     }
 
-    ic->setWindowVisible(true, false);
+    setInspectorFrontendProxyToInspectorController();
     m_attached = true;
 }
 
@@ -202,6 +278,7 @@ void WebDevToolsAgentImpl::detach()
 {
     // Prevent controller from sending messages to the frontend.
     InspectorController* ic = m_webViewImpl->page()->inspectorController();
+    ic->disconnectFrontend();
     ic->hideHighlight();
     ic->close();
     disposeUtilityContext();
@@ -212,26 +289,10 @@ void WebDevToolsAgentImpl::detach()
 
 void WebDevToolsAgentImpl::didNavigate()
 {
+    ClientMessageLoopAdapter::didNavigate();
     DebuggerAgentManager::onNavigate();
 }
 
-void WebDevToolsAgentImpl::didCommitProvisionalLoad(WebFrameImpl* webframe, bool isNewNavigation)
-{
-    if (!m_attached)
-        return;
-    WebDataSource* ds = webframe->dataSource();
-    const WebURLRequest& request = ds->request();
-    WebURL url = ds->hasUnreachableURL() ?
-        ds->unreachableURL() :
-        request.url();
-    if (!webframe->parent()) {
-        resetInspectorFrontendProxy();
-        m_toolsAgentDelegateStub->frameNavigate(WebCore::KURL(url).string());
-        SetApuAgentEnabledInUtilityContext(m_utilityContext, m_apuAgentEnabled);
-        unhideResourcesPanelIfNecessary();
-    }
-}
-
 void WebDevToolsAgentImpl::didClearWindowObject(WebFrameImpl* webframe)
 {
     DebuggerAgentManager::setHostId(webframe, m_hostId);
@@ -246,23 +307,9 @@ void WebDevToolsAgentImpl::forceRepaint()
     m_client->forceRepaint();
 }
 
-void WebDevToolsAgentImpl::dispatchOnInspectorController(int callId, const String& functionName, const String& jsonArgs)
+void WebDevToolsAgentImpl::dispatchOnInspectorController(const String& message)
 {
-    String result;
-    String exception;
-    result = m_debuggerAgentImpl->executeUtilityFunction(m_utilityContext, callId,
-        "InspectorControllerDispatcher", functionName, jsonArgs, false /* is sync */, &exception);
-    m_toolsAgentDelegateStub->didDispatchOn(callId, result, exception);
-}
-
-void WebDevToolsAgentImpl::dispatchOnInjectedScript(int callId, int injectedScriptId, const String& functionName, const String& jsonArgs, bool async)
-{
-    inspectorController()->inspectorBackend()->dispatchOnInjectedScript(
-        callId,
-        injectedScriptId,
-        functionName,
-        jsonArgs,
-        async);
+    inspectorController()->inspectorBackendDispatcher()->dispatch(message);
 }
 
 void WebDevToolsAgentImpl::dispatchMessageFromFrontend(const WebDevToolsMessageData& data)
@@ -323,70 +370,32 @@ void WebDevToolsAgentImpl::initDevToolsAgentHost()
     devtoolsAgentHost.addProtoFunction(
         "dispatch",
         WebDevToolsAgentImpl::jsDispatchOnClient);
-    devtoolsAgentHost.addProtoFunction(
-        "dispatchToApu",
-        WebDevToolsAgentImpl::jsDispatchToApu);
-    devtoolsAgentHost.addProtoFunction(
-        "evaluateOnSelf",
-        WebDevToolsAgentImpl::jsEvaluateOnSelf);
-    devtoolsAgentHost.addProtoFunction(
-        "runtimeFeatureStateChanged",
-        WebDevToolsAgentImpl::jsOnRuntimeFeatureStateChanged);
     devtoolsAgentHost.build();
-
-    v8::HandleScope scope;
-    v8::Context::Scope utilityScope(m_utilityContext);
-    // Call custom code to create inspector backend wrapper in the utility context
-    // instead of calling V8DOMWrapper::convertToV8Object that would create the
-    // wrapper in the Page main frame context.
-    v8::Handle<v8::Object> backendWrapper = createInspectorBackendV8Wrapper();
-    if (backendWrapper.IsEmpty())
-        return;
-    m_utilityContext->Global()->Set(v8::String::New("InspectorBackend"), backendWrapper);
-}
-
-v8::Local<v8::Object> WebDevToolsAgentImpl::createInspectorBackendV8Wrapper()
-{
-    V8ClassIndex::V8WrapperType descriptorType = V8ClassIndex::INSPECTORBACKEND;
-    v8::Handle<v8::Function> function = V8InspectorBackend::GetTemplate()->GetFunction();
-    if (function.IsEmpty()) {
-        // Return if allocation failed.
-        return v8::Local<v8::Object>();
-    }
-    v8::Local<v8::Object> instance = SafeAllocation::newInstance(function);
-    if (instance.IsEmpty()) {
-        // Avoid setting the wrapper if allocation failed.
-        return v8::Local<v8::Object>();
-    }
-    InspectorBackend* backend = m_webViewImpl->page()->inspectorController()->inspectorBackend();
-    V8DOMWrapper::setDOMWrapper(instance, V8ClassIndex::ToInt(descriptorType), backend);
-    // Create a weak reference to the v8 wrapper of InspectorBackend to deref
-    // InspectorBackend when the wrapper is garbage collected.
-    backend->ref();
-    v8::Persistent<v8::Object> weakHandle = v8::Persistent<v8::Object>::New(instance);
-    weakHandle.MakeWeak(backend, &InspectorBackendWeakReferenceCallback);
-    return instance;
 }
 
-void WebDevToolsAgentImpl::resetInspectorFrontendProxy()
+void WebDevToolsAgentImpl::createInspectorFrontendProxy()
 {
     disposeUtilityContext();
-    m_debuggerAgentImpl->createUtilityContext(m_webViewImpl->page()->mainFrame(), &m_utilityContext);
+    m_utilityContext = v8::Context::New();
     compileUtilityScripts();
     initDevToolsAgentHost();
+    WebCString debuggerScriptJs = m_client->debuggerScriptSource();
+    WebCore::ScriptDebugServer::shared().setDebuggerScriptSource(
+        WebCore::String(debuggerScriptJs.data(), debuggerScriptJs.length()));
+}
 
+void WebDevToolsAgentImpl::setInspectorFrontendProxyToInspectorController()
+{
     v8::HandleScope scope;
-    v8::Context::Scope contextScope(m_utilityContext);
     ScriptState* state = ScriptState::forContext(
         v8::Local<v8::Context>::New(m_utilityContext));
     InspectorController* ic = inspectorController();
-    ic->setFrontendProxyObject(state, ScriptObject(state, m_utilityContext->Global()));
+    ic->connectFrontend(ScriptObject(state, m_utilityContext->Global()));
 }
 
 void WebDevToolsAgentImpl::setApuAgentEnabled(bool enabled)
 {
     m_apuAgentEnabled = enabled;
-    SetApuAgentEnabledInUtilityContext(m_utilityContext, enabled);
     InspectorController* ic = m_webViewImpl->page()->inspectorController();
     if (enabled) {
         m_resourceTrackingWasEnabled = ic->resourceTrackingEnabled();
@@ -415,55 +424,25 @@ v8::Handle<v8::Value> WebDevToolsAgentImpl::jsDispatchOnClient(const v8::Argumen
     String message = WebCore::toWebCoreStringWithNullCheck(args[0]);
     if (message.isEmpty() || exceptionCatcher.HasCaught())
         return v8::Undefined();
+
     WebDevToolsAgentImpl* agent = static_cast<WebDevToolsAgentImpl*>(v8::External::Cast(*args.Data())->Value());
-    agent->m_toolsAgentDelegateStub->dispatchOnClient(message);
-    return v8::Undefined();
-}
 
-// static
-v8::Handle<v8::Value> WebDevToolsAgentImpl::jsDispatchToApu(const v8::Arguments& args)
-{
-    v8::TryCatch exceptionCatcher;
-    String message = WebCore::toWebCoreStringWithNullCheck(args[0]);
-    if (message.isEmpty() || exceptionCatcher.HasCaught())
+    if (!agent->m_apuAgentEnabled) {
+        agent->m_toolsAgentDelegateStub->dispatchOnClient(message);
         return v8::Undefined();
-    WebDevToolsAgentImpl* agent = static_cast<WebDevToolsAgentImpl*>(
-        v8::External::Cast(*args.Data())->Value());
-    agent->m_apuAgentDelegateStub->dispatchToApu(message);
-    return v8::Undefined();
-}
-
-// static
-v8::Handle<v8::Value> WebDevToolsAgentImpl::jsEvaluateOnSelf(const v8::Arguments& args)
-{
-    String code;
-    {
-        v8::TryCatch exceptionCatcher;
-        code = WebCore::toWebCoreStringWithNullCheck(args[0]);
-        if (code.isEmpty() || exceptionCatcher.HasCaught())
-            return v8::Undefined();
     }
-    WebDevToolsAgentImpl* agent = static_cast<WebDevToolsAgentImpl*>(v8::External::Cast(*args.Data())->Value());
-    v8::Context::Scope(agent->m_utilityContext);
-    V8Proxy* proxy = V8Proxy::retrieve(agent->m_webViewImpl->page()->mainFrame());
-    v8::Local<v8::Value> result = proxy->runScript(v8::Script::Compile(v8::String::New(code.utf8().data())), true);
-    return result;
-}
 
-// static
-v8::Handle<v8::Value> WebDevToolsAgentImpl::jsOnRuntimeFeatureStateChanged(const v8::Arguments& args)
-{
-    v8::TryCatch exceptionCatcher;
-    String feature = WebCore::toWebCoreStringWithNullCheck(args[0]);
-    bool enabled = args[1]->ToBoolean()->Value();
-    if (feature.isEmpty() || exceptionCatcher.HasCaught())
+    String method = WebCore::toWebCoreStringWithNullCheck(args[1]);
+    if (method.isEmpty() || exceptionCatcher.HasCaught())
         return v8::Undefined();
-    WebDevToolsAgentImpl* agent = static_cast<WebDevToolsAgentImpl*>(v8::External::Cast(*args.Data())->Value());
-    agent->m_client->runtimeFeatureStateChanged(feature, enabled);
+
+    if (method != "addRecordToTimeline" && method != "updateResource" && method != "addResource")
+        return v8::Undefined();
+
+    agent->m_apuAgentDelegateStub->dispatchToApu(message);
     return v8::Undefined();
 }
 
-
 WebCore::InspectorController* WebDevToolsAgentImpl::inspectorController()
 {
     if (Page* page = m_webViewImpl->page())
@@ -486,10 +465,10 @@ void WebDevToolsAgentImpl::identifierForInitialRequest(
     }
 }
 
-void WebDevToolsAgentImpl::willSendRequest(unsigned long resourceId, const WebURLRequest& request)
+void WebDevToolsAgentImpl::willSendRequest(unsigned long resourceId, WebURLRequest& request)
 {
     if (InspectorController* ic = inspectorController())
-        ic->willSendRequest(resourceId, request.toResourceRequest(), ResourceResponse());
+        ic->willSendRequest(resourceId, request.toMutableResourceRequest(), ResourceResponse());
 }
 
 void WebDevToolsAgentImpl::didReceiveData(unsigned long resourceId, int length)
@@ -517,6 +496,88 @@ void WebDevToolsAgentImpl::didFailLoading(unsigned long resourceId, const WebURL
         ic->didFailLoading(resourceId, resourceError);
 }
 
+void WebDevToolsAgentImpl::inspectorDestroyed()
+{
+    // Our lifetime is bound to the WebViewImpl.
+}
+
+void WebDevToolsAgentImpl::openInspectorFrontend(InspectorController*)
+{
+}
+
+void WebDevToolsAgentImpl::highlight(Node* node)
+{
+    // InspectorController does the actuall tracking of the highlighted node
+    // and the drawing of the highlight. Here we just make sure to invalidate
+    // the rects of the old and new nodes.
+    hideHighlight();
+}
+
+void WebDevToolsAgentImpl::hideHighlight()
+{
+    // FIXME: able to invalidate a smaller rect.
+    // FIXME: Is it important to just invalidate the rect of the node region
+    // given that this is not on a critical codepath?  In order to do so, we'd
+    // have to take scrolling into account.
+    const WebSize& size = m_webViewImpl->size();
+    WebRect damagedRect(0, 0, size.width, size.height);
+    if (m_webViewImpl->client())
+        m_webViewImpl->client()->didInvalidateRect(damagedRect);
+}
+
+void WebDevToolsAgentImpl::populateSetting(const String& key, String* value)
+{
+    WebString string;
+    m_webViewImpl->inspectorSetting(key, &string);
+    *value = string;
+}
+
+void WebDevToolsAgentImpl::storeSetting(const String& key, const String& value)
+{
+    m_webViewImpl->setInspectorSetting(key, value);
+}
+
+bool WebDevToolsAgentImpl::sendMessageToFrontend(const WebCore::String& message)
+{
+    WebDevToolsAgentImpl* devToolsAgent = static_cast<WebDevToolsAgentImpl*>(m_webViewImpl->devToolsAgent());
+    if (!devToolsAgent)
+        return false;
+
+    if (devToolsAgent->m_apuAgentEnabled && devToolsAgent->m_apuAgentDelegateStub) {
+        devToolsAgent->m_apuAgentDelegateStub->dispatchToApu(message);
+        return true;
+    }
+
+    WebVector<WebString> arguments(size_t(1));
+    arguments[0] = message;
+    WebDevToolsMessageData data;
+    data.className = "ToolsAgentDelegate";
+    data.methodName = "dispatchOnClient";
+    data.arguments.swap(arguments);
+    devToolsAgent->sendRpcMessage(data);
+    return true;
+}
+
+void WebDevToolsAgentImpl::resourceTrackingWasEnabled()
+{
+    m_client->runtimeFeatureStateChanged(kResourceTrackingFeatureName, true);
+}
+
+void WebDevToolsAgentImpl::resourceTrackingWasDisabled()
+{
+    m_client->runtimeFeatureStateChanged(kResourceTrackingFeatureName, false);
+}
+
+void WebDevToolsAgentImpl::timelineProfilerWasStarted()
+{
+    m_client->runtimeFeatureStateChanged(kTimelineFeatureName, true);
+}
+
+void WebDevToolsAgentImpl::timelineProfilerWasStopped()
+{
+    m_client->runtimeFeatureStateChanged(kTimelineFeatureName, false);
+}
+
 void WebDevToolsAgentImpl::evaluateInWebInspector(long callId, const WebString& script)
 {
     InspectorController* ic = inspectorController();
@@ -532,11 +593,6 @@ void WebDevToolsAgentImpl::setTimelineProfilingEnabled(bool enabled)
         ic->stopTimelineProfiler();
 }
 
-WebDevToolsAgent* WebDevToolsAgent::create(WebView* webview, WebDevToolsAgentClient* client)
-{
-    return new WebDevToolsAgentImpl(static_cast<WebViewImpl*>(webview), client);
-}
-
 void WebDevToolsAgent::executeDebuggerCommand(const WebString& command, int callerId)
 {
     DebuggerAgentManager::executeDebuggerCommand(command, callerId);
@@ -552,10 +608,10 @@ void WebDevToolsAgent::setMessageLoopDispatchHandler(MessageLoopDispatchHandler
     DebuggerAgentManager::setMessageLoopDispatchHandler(handler);
 }
 
-bool WebDevToolsAgent::dispatchMessageFromFrontendOnIOThread(const WebDevToolsMessageData& data)
+bool WebDevToolsAgent::dispatchMessageFromFrontendOnIOThread(WebDevToolsMessageTransport* transport, const WebDevToolsMessageData& data)
 {
-    IORPCDelegate transport;
-    ProfilerAgentDelegateStub stub(&transport);
+    IORPCDelegate delegate(transport);
+    ProfilerAgentDelegateStub stub(&delegate);
     ProfilerAgentImpl agent(&stub);
     return ProfilerAgentDispatch::dispatch(&agent, data);
 }