Implemented new fence syncs which replaces the old sync points.

gpu/command_buffer/service/gles2_cmd_decoder.h

Index: gpu/command_buffer/service/gles2_cmd_decoder.h
diff --git a/gpu/command_buffer/service/gles2_cmd_decoder.h b/gpu/command_buffer/service/gles2_cmd_decoder.h
index 0fb4882c76d8a57f7977d9fd99ca1219fad31229..60ca384c6f711f4361cbb542508333873227f8af 100644
--- a/gpu/command_buffer/service/gles2_cmd_decoder.h
+++ b/gpu/command_buffer/service/gles2_cmd_decoder.h
@@ -65,6 +65,10 @@ class GPU_EXPORT GLES2Decoder : public base::SupportsWeakPtr<GLES2Decoder>,
  public:
   typedef error::Error Error;
   typedef base::Callback<bool(uint32 id)> WaitSyncPointCallback;
+  typedef base::Callback<void(uint64_t release)> FenceSyncReleaseCallback;
+  typedef base::Callback<bool(gpu::CommandBufferNamespace namespace_id,
+                              uint64_t command_buffer_id,
+                              uint64_t release)> WaitFenceSyncCallback;
 
   // The default stencil mask, which has all bits set.  This really should be a
   // GLuint, but we can't #include gl_bindings.h in this file without causing
@@ -234,6 +238,13 @@ class GPU_EXPORT GLES2Decoder : public base::SupportsWeakPtr<GLES2Decoder>,
   virtual void SetWaitSyncPointCallback(
       const WaitSyncPointCallback& callback) = 0;
 
+  // Sets the callback for fence sync release and wait calls. The wait call
+  // returns true if the channel is still scheduled.
+  virtual void SetFenceSyncReleaseCallback(
+      const FenceSyncReleaseCallback& callback) = 0;
+  virtual void SetWaitFenceSyncCallback(
+      const WaitFenceSyncCallback& callback) = 0;
+
   virtual void WaitForReadPixels(base::Closure callback) = 0;
   virtual uint32 GetTextureUploadCount() = 0;
   virtual base::TimeDelta GetTotalTextureUploadTime() = 0;