Implemented new fence syncs which replaces the old sync points.

content/common/gpu/gpu_command_buffer_stub.h

Index: content/common/gpu/gpu_command_buffer_stub.h
diff --git a/content/common/gpu/gpu_command_buffer_stub.h b/content/common/gpu/gpu_command_buffer_stub.h
index b1aac89a3904a15587a5a06f6de75dfd74e24434..a919c4c4626d7c3e92891a78d02b3195a89260e6 100644
--- a/content/common/gpu/gpu_command_buffer_stub.h
+++ b/content/common/gpu/gpu_command_buffer_stub.h
@@ -209,6 +209,14 @@ class GpuCommandBufferStub
   void OnSignalSyncPointAck(uint32 id);
   void OnSignalQuery(uint32 query, uint32 id);
 
+  void OnFenceSyncRelease(uint32_t release);
+  bool OnWaitFenceSync(gpu::CommandBufferNamespace namespace_id,
+                       uint64_t command_buffer_id,
+                       uint32_t release);
+  void OnWaitFenceSyncCompleted(gpu::CommandBufferNamespace namespace_id,
+                                uint64_t command_buffer_id,
+                                uint32_t release);
+
   void OnSetClientHasMemoryAllocationChangedCallback(bool has_callback);
 
   void OnCreateImage(int32 id,
@@ -242,7 +250,10 @@ class GpuCommandBufferStub
 
   bool CheckContextLost();
   void CheckCompleteWaits();
-  void PullTextureUpdates(uint32 sync_point);
+  void PullTextureUpdates(gpu::CommandBufferNamespace namespace_id,

[sunnyps, 2015/09/23 21:44:45]

PullTextureUpdates(SyncToken)?

[David Yen, 2015/09/25 20:13:33]

I think it's easier at this level to use 3 variables since that's what they
have. Otherwise I would have to create the struct at every call site instead of
once in the function.

+                          uint64_t command_buffer_id,
+                          uint32_t release);
+
 
   // The lifetime of objects of this class is managed by a GpuChannel. The
   // GpuChannels destroy all the GpuCommandBufferStubs that they own when they