Implement navigator.sendBeacon()

Source/core/loader/PingLoader.h

 /*
  * 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
@@ skipping 14 matching lines @@
  * 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 "core/fetch/ResourceLoaderOptions.h"
-#include "core/page/PageLifecycleObserver.h"
-#include "platform/Timer.h"
-#include "public/platform/WebURLLoaderClient.h"
+#include "core/loader/SimplexLoader.h"
 #include "wtf/Noncopyable.h"
 #include "wtf/RefPtr.h"
 
 namespace WebCore {
 
 class FormData;
 class LocalFrame;
 class KURL;
-class ResourceError;
-class ResourceHandle;
-class ResourceRequest;
-class ResourceResponse;
 
 // This class triggers asynchronous loads independent of LocalFrame 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 FINAL : public PageLifecycleObserver, private blink::WebURLLoaderClient {
-    WTF_MAKE_NONCOPYABLE(PingLoader); WTF_MAKE_FAST_ALLOCATED;
+// It is an instance of a SimplexLoader; see its class declaration for the functionality provided.
+class PingLoader FINAL : public SimplexLoader {
+    WTF_MAKE_NONCOPYABLE(PingLoader);
+    WTF_MAKE_FAST_ALLOCATED;
 public:
     enum ViolationReportType {
         ContentSecurityPolicyViolationReport,
         XSSAuditorViolationReport
     };
 
     static void loadImage(LocalFrame*, const KURL& url);
     static void sendPing(LocalFrame*, const KURL& pingURL, const KURL& destinationURL);
     static void sendViolationReport(LocalFrame*, const KURL& reportURL, PassRefPtr<FormData> report, ViolationReportType);
 
-    virtual ~PingLoader();
-
-private:
-    PingLoader(LocalFrame*, ResourceRequest&, const FetchInitiatorInfo&, StoredCredentials);
-
-    static void start(LocalFrame*, ResourceRequest&, const FetchInitiatorInfo&, StoredCredentials = AllowStoredCredentials);
-
-    virtual void didReceiveResponse(blink::WebURLLoader*, const blink::WebURLResponse&) OVERRIDE;
-    virtual void didReceiveData(blink::WebURLLoader*, const char*, int, int) OVERRIDE;
-    virtual void didFinishLoading(blink::WebURLLoader*, double, int64_t) OVERRIDE;
-    virtual void didFail(blink::WebURLLoader*, const blink::WebURLError&) OVERRIDE;
-
-    void timeout(Timer<PingLoader>*);
-
-    OwnPtr<blink::WebURLLoader> m_loader;
-    Timer<PingLoader> m_timeout;
-    String m_url;
-    unsigned long m_identifier;
+    virtual ~PingLoader() { }
 };
 
 }
 
 #endif