Patch 2/3 to get WebScheduler via WebThread

Source/platform/graphics/RecordingImageBufferSurfaceTest.cpp

 // Copyright 2014 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 "config.h"
 
 #include "platform/graphics/RecordingImageBufferSurface.h"
 
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/ImageBuffer.h"
@@ skipping 285 matching lines @@
                 m_task->run();
                 delete m_task;
                 m_task = 0;
             }
             if (m_taskObserver)
                 m_taskObserver->didProcessTask();
         }
 
         virtual void exitRunLoop() override { ASSERT_NOT_REACHED(); }
 
+        virtual WebScheduler* scheduler() const override
+        {
+            ASSERT_NOT_REACHED();
+            return nullptr;
+        }
+
     private:
         TaskObserver* m_taskObserver;
         Task* m_task;
     };
 
     class CurrentThreadPlatformMock : public Platform {
     public:
         CurrentThreadPlatformMock() { }
         virtual void cryptographicallyRandomValues(unsigned char* buffer, size_t length) { ASSERT_NOT_REACHED(); }
         virtual WebThread* currentThread() override { return &m_currentThread; }
@@ skipping 64 matching lines @@
 }
 
 DEFINE_TEST_TASK_WRAPPER_CLASS(testClearRect)
 TEST_F(RecordingImageBufferSurfaceTest, testClearRect)
 {
     CALL_TEST_TASK_WRAPPER(testClearRect);
     expectDisplayListEnabled(true);
 }
 
 } // namespace