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diff --git a/Source/WebKit/chromium/public/WebDevToolsAgent.h b/Source/WebKit/chromium/public/WebDevToolsAgent.h
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+++ b/Source/WebKit/chromium/public/WebDevToolsAgent.h
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+/*
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef WebDevToolsAgent_h
+#define WebDevToolsAgent_h
+
+#include "WebCommon.h"
+
+#if WEBKIT_USING_V8
+namespace v8 {
+class Value;
+template <class T> class Handle;
+}
+#endif
+
+namespace WebKit {
+class WebDevToolsAgentClient;
+class WebDevToolsMessageTransport;
+class WebFrame;
+class WebString;
+class WebURLRequest;
+class WebURLResponse;
+class WebView;
+struct WebDevToolsMessageData;
+struct WebPoint;
+struct WebURLError;
+
+class WebDevToolsAgent {
+public:
+    virtual ~WebDevToolsAgent() {}
+
+    virtual void attach() = 0;
+    virtual void detach() = 0;
+    virtual void frontendLoaded() = 0;
+
+    virtual void didNavigate() = 0;
+
+    virtual void dispatchOnInspectorBackend(const WebString& message) = 0;
+
+    virtual void inspectElementAt(const WebPoint&) = 0;
+#if WEBKIT_USING_V8
+    virtual void inspectNode(v8::Handle<v8::Value>) = 0;
+#endif
+    virtual void setRuntimeProperty(const WebString& name, const WebString& value) = 0;
+
+    // Exposed for LayoutTestController.
+    virtual void evaluateInWebInspector(long callId, const WebString& script) = 0;
+    virtual void setTimelineProfilingEnabled(bool enabled) = 0;
+
+    // Asynchronously executes debugger command in the render thread.
+    // |callerIdentifier| will be used for sending response.
+    WEBKIT_API static void executeDebuggerCommand(
+        const WebString& command, int callerIdentifier);
+
+    // Asynchronously request debugger to pause immediately.
+    WEBKIT_API static void debuggerPauseScript();
+
+    class MessageDescriptor {
+    public:
+        virtual ~MessageDescriptor() { }
+        virtual WebDevToolsAgent* agent() = 0;
+        virtual WebString message() = 0;
+    };
+    // Asynchronously request debugger to pause immediately and run the command.
+    WEBKIT_API static void interruptAndDispatch(MessageDescriptor*);
+    WEBKIT_API static bool shouldInterruptForMessage(const WebString&);
+    WEBKIT_API static void processPendingMessages();
+
+    typedef void (*MessageLoopDispatchHandler)();
+
+    // Installs dispatch handle that is going to be called periodically
+    // while on a breakpoint.
+    WEBKIT_API static void setMessageLoopDispatchHandler(MessageLoopDispatchHandler);
+
+    virtual void identifierForInitialRequest(unsigned long resourceId, WebFrame*, const WebURLRequest&) = 0;
+    virtual void willSendRequest(unsigned long resourceId, WebURLRequest&) = 0;
+    virtual void didReceiveData(unsigned long resourceId, int length) = 0;
+    virtual void didReceiveResponse(unsigned long resourceId, const WebURLResponse&) = 0;
+    virtual void didFinishLoading(unsigned long resourceId) = 0;
+    virtual void didFailLoading(unsigned long resourceId, const WebURLError&) = 0;
+};
+
+} // namespace WebKit
+
+#endif