Add blink::WebWaitableEvent interface (blink side)

public/platform/Platform.h

 /*
  * Copyright (C) 2012 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 70 matching lines @@
 class WebPublicSuffixList;
 class WebRTCPeerConnectionHandler;
 class WebRTCPeerConnectionHandlerClient;
 class WebSandboxSupport;
 class WebSocketHandle;
 class WebSocketStreamHandle;
 class WebSpeechSynthesizer;
 class WebSpeechSynthesizerClient;
 class WebStorageNamespace;
 class WebStorageQuotaCallbacks;
-class WebUnitTestSupport;
+struct WebFloatPoint;
 class WebThemeEngine;
 class WebThread;
 class WebURL;
 class WebURLLoader;
+class WebUnitTestSupport;
+class WebWaitableEvent;
 class WebWorkerRunLoop;
-struct WebFloatPoint;
 struct WebLocalizedString;
 struct WebSize;
 
 class Platform {
 public:
     // HTML5 Database ------------------------------------------------------
 
 #ifdef WIN32
     typedef HANDLE FileHandle;
 #else
@@ skipping 248 matching lines @@
     // Threads -------------------------------------------------------
 
     // Creates an embedder-defined thread.
     virtual WebThread* createThread(const char* name) { return 0; }
 
     // Returns an interface to the current thread. This is owned by the
     // embedder.
     virtual WebThread* currentThread() { return 0; }
 
 
+    // WaitableEvent -------------------------------------------------------
+
+    // Creates an embedder-defined waitable event object.
+    virtual WebWaitableEvent* createWaitableEvent() { return 0; }
+
+    // Waits on multiple events and returns the event object that has been
+    // signaled. This may return 0 if it fails to wait events.
+    // Any event objects given to this method must not deleted while this
+    // wait is happening.
+    virtual WebWaitableEvent* waitMultipleEvents(const WebVector<WebWaitableEvent*>& events) { return 0; }
+
+
     // Profiling -----------------------------------------------------------
 
     virtual void decrementStatsCounter(const char* name) { }
     virtual void incrementStatsCounter(const char* name) { }
 
 
     // Resources -----------------------------------------------------------
 
     // Returns a blob of data corresponding to the named resource.
     virtual WebData loadResource(const char* name) { return WebData(); }
@@ skipping 237 matching lines @@
     virtual WebDatabaseObserver* databaseObserver() { return 0; }
 
 
 protected:
     virtual ~Platform() { }
 };
 
 } // namespace blink
 
 #endif