Introduce WebTaskRunner Patch 3/5

Source/web/WebKit.cpp

Index: Source/web/WebKit.cpp
diff --git a/Source/web/WebKit.cpp b/Source/web/WebKit.cpp
index 5e9638c9433ed6b48d9ca8ca44b156bcd88f6969..0f8988ed54ae6fdb40fa214a2b9a80ece8994d7e 100644
--- a/Source/web/WebKit.cpp
+++ b/Source/web/WebKit.cpp
@@ -81,7 +81,7 @@ public:
     }
 };
 
-class MainThreadTaskRunner: public WebThread::Task {
+class MainThreadTaskRunner: public WebTaskRunner::Task {
     WTF_MAKE_NONCOPYABLE(MainThreadTaskRunner);
 public:
     MainThreadTaskRunner(WTF::MainThreadFunction* function, void* context)
@@ -156,7 +156,7 @@ static void cryptographicallyRandomValues(unsigned char* buffer, size_t length)
 
 static void callOnMainThreadFunction(WTF::MainThreadFunction function, void* context)
 {
-    Platform::current()->mainThread()->postTask(FROM_HERE, new MainThreadTaskRunner(function, context));
+    Platform::current()->mainThread()->defaultTaskRunner()->postTask(FROM_HERE, new MainThreadTaskRunner(function, context));
 }
 
 static void adjustAmountOfExternalAllocatedMemory(int size)
@@ -184,7 +184,7 @@ void initializeWithoutV8(Platform* platform)
         s_pendingGCRunner = new PendingGCRunner;
         currentThread->addTaskObserver(s_pendingGCRunner);
 
-        OwnPtr<MessageLoopInterruptor> interruptor = adoptPtr(new MessageLoopInterruptor(currentThread));
+        OwnPtr<MessageLoopInterruptor> interruptor = adoptPtr(new MessageLoopInterruptor(currentThread->defaultTaskRunner()));
         ThreadState::current()->addInterruptor(interruptor.release());
     }