Introduce a basic Blink Scheduler

Source/web/WebKit.cpp

 /*
  * Copyright (C) 2009 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 32 matching lines @@
 #include "gin/public/v8_platform.h"
 #include "modules/InitModules.h"
 #include "platform/LayoutTestSupport.h"
 #include "platform/Logging.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/graphics/ImageDecodingStore.h"
 #include "platform/graphics/media/MediaPlayer.h"
 #include "platform/heap/Heap.h"
 #include "platform/heap/glue/MessageLoopInterruptor.h"
 #include "platform/heap/glue/PendingGCRunner.h"
+#include "platform/scheduler/Scheduler.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebPrerenderingSupport.h"
 #include "public/platform/WebThread.h"
 #include "web/IndexedDBClientImpl.h"
 #include "web/WebMediaPlayerClientImpl.h"
 #include "wtf/Assertions.h"
 #include "wtf/CryptographicallyRandomNumber.h"
 #include "wtf/MainThread.h"
 #include "wtf/WTF.h"
 #include "wtf/text/AtomicString.h"
@@ skipping 103 matching lines @@
     // currentThread will always be non-null in production, but can be null in Chromium unit tests.
     if (WebThread* currentThread = platform->currentThread()) {
         ASSERT(!s_pendingGCRunner);
         s_pendingGCRunner = new WebCore::PendingGCRunner;
         currentThread->addTaskObserver(s_pendingGCRunner);
 
         ASSERT(!s_messageLoopInterruptor);
         s_messageLoopInterruptor = new WebCore::MessageLoopInterruptor(currentThread);
         WebCore::ThreadState::current()->addInterruptor(s_messageLoopInterruptor);
     }
+    WebCore::Scheduler::initializeOnMainThread();
 
     DEFINE_STATIC_LOCAL(WebCore::ModulesInitializer, initializer, ());
     initializer.init();
 
     // There are some code paths (for example, running WebKit in the browser
     // process and calling into LocalStorage before anything else) where the
     // UTF8 string encoding tables are used on a background thread before
     // they're set up.  This is a problem because their set up routines assert
     // they're running on the main WebKitThread.  It might be possible to make
     // the initialization thread-safe, but given that so many code paths use
@@ skipping 10 matching lines @@
     // currentThread will always be non-null in production, but can be null in Chromium unit tests.
     if (Platform::current()->currentThread()) {
         ASSERT(s_endOfTaskRunner);
         Platform::current()->currentThread()->removeTaskObserver(s_endOfTaskRunner);
         delete s_endOfTaskRunner;
         s_endOfTaskRunner = 0;
     }
 
     ASSERT(s_isolateInterruptor);
     WebCore::ThreadState::current()->removeInterruptor(s_isolateInterruptor);
+    WebCore::Scheduler::shutdown();
 
     // currentThread will always be non-null in production, but can be null in Chromium unit tests.
     if (Platform::current()->currentThread()) {
         ASSERT(s_pendingGCRunner);
         delete s_pendingGCRunner;
         s_pendingGCRunner = 0;
 
         ASSERT(s_messageLoopInterruptor);
         WebCore::ThreadState::current()->removeInterruptor(s_messageLoopInterruptor);
         delete s_messageLoopInterruptor;
@@ skipping 50 matching lines @@
         channel->state = WTFLogChannelOn;
 #endif // !LOG_DISABLED
 }
 
 void resetPluginCache(bool reloadPages)
 {
     WebCore::Page::refreshPlugins(reloadPages);
 }
 
 } // namespace blink