Implement WebGL's commit on the main thread

third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h

Index: third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h
diff --git a/third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h b/third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h
index e423490f14e67e3027cbb1ed728176d82528de23..96ea085b1eb2675a27953abcb645fc1eb1c95ec9 100644
--- a/third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h
+++ b/third_party/WebKit/Source/platform/graphics/AcceleratedStaticBitmapImage.h
@@ -6,8 +6,6 @@
 #define AcceleratedStaticBitmapImage_h
 
 #include "base/threading/thread_checker.h"
-#include "gpu/command_buffer/common/mailbox.h"
-#include "gpu/command_buffer/common/sync_token.h"
 #include "platform/geometry/IntSize.h"
 #include "platform/graphics/StaticBitmapImage.h"
 #include "third_party/skia/include/core/SkRefCnt.h"
@@ -43,6 +41,9 @@ public:
     // To be called on sender thread before performing a transfer
     void transfer() final;
 
+    gpu::Mailbox getMailbox() final { return m_mailbox; }
+    gpu::SyncToken getSyncToken() final { return m_syncToken; }
+
 private:
     AcceleratedStaticBitmapImage(sk_sp<SkImage>);
     AcceleratedStaticBitmapImage(sk_sp<SkImage>, const gpu::Mailbox&, const gpu::SyncToken&);