Removed implementation of CHROMIUM_subscribe_uniform

gpu/ipc/service/gpu_channel_manager_delegate.h

Index: gpu/ipc/service/gpu_channel_manager_delegate.h
diff --git a/gpu/ipc/service/gpu_channel_manager_delegate.h b/gpu/ipc/service/gpu_channel_manager_delegate.h
index 803e0112186c855ef0baae472401f7d13ebc4cb2..2ab1623f704afffc7d2544ecd0cab13d5c3a0ef9 100644
--- a/gpu/ipc/service/gpu_channel_manager_delegate.h
+++ b/gpu/ipc/service/gpu_channel_manager_delegate.h
@@ -26,10 +26,6 @@ struct GPUMemoryUmaStats;
 
 class GpuChannelManagerDelegate {
  public:
-  // Tells the delegate that a context has subscribed to a new target and
-  // the browser should start sending the corresponding information
-  virtual void AddSubscription(int32_t client_id, unsigned int target) = 0;
-
   // Tells the delegate that an offscreen context was created for the provided
   // |active_url|.
   virtual void DidCreateOffscreenContext(const GURL& active_url) = 0;
@@ -49,10 +45,6 @@ class GpuChannelManagerDelegate {
   // Tells the delegate about GPU memory usage statistics for UMA logging.
   virtual void GpuMemoryUmaStats(const GPUMemoryUmaStats& params) = 0;
 
-  // Tells the delegate that no contexts are subscribed to the target anymore
-  // so the delegate should stop sending the corresponding information.
-  virtual void RemoveSubscription(int32_t client_id, unsigned int target) = 0;
-
   // Tells the delegate to cache the given shader information in persistent
   // storage. The embedder is expected to repopulate the in-memory cache through
   // the respective GpuChannelManager API.