Merge WebKit at r75315: Initial merge by git.

Change-Id: I570314b346ce101c935ed22a626b48c2af266b84

1 files changed, 77 insertions, 0 deletions

diff --git a/Source/WebCore/loader/PingLoader.h b/Source/WebCore/loader/PingLoader.h
new file mode 100644
index 0000000..3a076fb
--- /dev/null
+++ b/Source/WebCore/loader/PingLoader.h
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+/*
+ * Copyright (C) 2010 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 PingLoader_h
+#define PingLoader_h
+
+#include "ResourceHandleClient.h"
+#include "Timer.h"
+#include <wtf/Noncopyable.h>
+#include <wtf/RefPtr.h>
+
+namespace WebCore {
+
+class Frame;
+class KURL;
+class ResourceError;
+class ResourceHandle;
+class ResourceResponse;
+
+// This class triggers asynchronous loads independent of Frame staying alive (i.e., auditing pingbacks).
+// Since nothing depends on resources loaded through this class, we just want
+// to allow the load to live long enough to ensure the message was actually sent.
+// Therefore, as soon as a callback is received from the ResourceHandle, this class 
+// will cancel the load and delete itself.
+class PingLoader : private ResourceHandleClient, public Noncopyable {
+public:
+    static void loadImage(Frame*, const KURL& url);
+    static void sendPing(Frame*, const KURL& pingURL, const KURL& destinationURL);
+
+    ~PingLoader();
+
+private:
+    PingLoader(Frame*, const ResourceRequest&);
+
+    void didReceiveResponse(ResourceHandle*, const ResourceResponse&) { delete this; }
+    void didReceiveData(ResourceHandle*, const char*, int) { delete this; }
+    void didFinishLoading(ResourceHandle*, double) { delete this; }
+    void didFail(ResourceHandle*, const ResourceError&) { delete this; }
+    void timeout(Timer<PingLoader>*) { delete this; }
+    bool shouldUseCredentialStorage(ResourceHandle*) { return m_shouldUseCredentialStorage; }
+
+    RefPtr<ResourceHandle> m_handle;
+    Timer<PingLoader> m_timeout;
+    bool m_shouldUseCredentialStorage;
+};
+
+}
+
+#endif