MailboxSync: Imply fence with sync point

gpu/command_buffer/service/in_process_command_buffer.cc

Index: gpu/command_buffer/service/in_process_command_buffer.cc
diff --git a/gpu/command_buffer/service/in_process_command_buffer.cc b/gpu/command_buffer/service/in_process_command_buffer.cc
index 310fcedcccb18385bb1b7c84d57f8ddb545c0f3f..ba2d6e4c8948dc88c8daae14aea81a1f5c4cedb1 100644
--- a/gpu/command_buffer/service/in_process_command_buffer.cc
+++ b/gpu/command_buffer/service/in_process_command_buffer.cc
@@ -422,7 +422,9 @@ bool InProcessCommandBuffer::InitializeOnGpuThread(
     decoder_->SetResizeCallback(base::Bind(
         &InProcessCommandBuffer::OnResizeView, gpu_thread_weak_ptr_));
   }
-  decoder_->SetWaitSyncPointCallback(base::Bind(&WaitSyncPoint));
+  decoder_->SetWaitSyncPointCallback(
+      base::Bind(&InProcessCommandBuffer::WaitSyncPointOnGpuThread,
+                 base::Unretained(this)));
 
   return true;
 }
@@ -658,7 +660,7 @@ void InProcessCommandBuffer::RetireSyncPointOnGpuThread(uint32 sync_point) {
       make_current_success = MakeCurrent();
     }
     if (make_current_success)
-      mailbox_manager->PushTextureUpdates();
+      mailbox_manager->PushTextureUpdates(sync_point);
   }
   g_sync_point_manager.Get().RetireSyncPoint(sync_point);
 }
@@ -672,6 +674,14 @@ void InProcessCommandBuffer::SignalSyncPoint(unsigned sync_point,
                        WrapCallback(callback)));
 }
 
+bool InProcessCommandBuffer::WaitSyncPointOnGpuThread(unsigned sync_point) {
+  WaitSyncPoint(sync_point);
+  gles2::MailboxManager* mailbox_manager =
+      decoder_->GetContextGroup()->mailbox_manager();
+  mailbox_manager->PullTextureUpdates(sync_point);
+  return true;
+}
+
 void InProcessCommandBuffer::SignalSyncPointOnGpuThread(
     unsigned sync_point,
     const base::Closure& callback) {