Implement navigator.sendBeacon()

Source/core/loader/PingLoader.h

Index: Source/core/loader/PingLoader.h
diff --git a/Source/core/loader/PingLoader.h b/Source/core/loader/PingLoader.h
index 168a0c19501dd4c6d84b3a9525a83280b1f99aa9..12924eba41f39dde68be2017173ed4494c65406e 100644
--- a/Source/core/loader/PingLoader.h
+++ b/Source/core/loader/PingLoader.h
@@ -32,10 +32,7 @@
 #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"
 
@@ -44,18 +41,12 @@ 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,
@@ -66,24 +57,7 @@ public:
     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() { }
 };
 
 }