Remove WebKit::Platform dependencies from cc

cc/test/run_all_unittests.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/message_loop.h"
 #include "base/test/test_suite.h"
-#include "cc/test/test_webkit_platform.h"
+#include "cc/thread_impl.h"
+#include "cc/proxy.h"
 #include "testing/gmock/include/gmock/gmock.h"
-#include "third_party/WebKit/Source/Platform/chromium/public/Platform.h"
 
 int main(int argc, char** argv) {
   ::testing::InitGoogleMock(&argc, argv);
   TestSuite test_suite(argc, argv);
-  cc::TestWebKitPlatform platform;
   MessageLoop message_loop;
-  WebKit::Platform::initialize(&platform);
+  scoped_ptr<cc::Thread> mainCCThread = cc::ThreadImpl::createForCurrentThread();
+  cc::Proxy::setMainThread(mainCCThread.get());
   int result = test_suite.Run();
-  WebKit::Platform::shutdown();
 
   return result;
 }