Removed implementation of CHROMIUM_subscribe_uniform

gpu/ipc/service/gpu_channel_manager_delegate.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_
 #define GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_
 
 #include "gpu/command_buffer/common/constants.h"
 #include "gpu/ipc/common/surface_handle.h"
 
 #if defined(OS_MACOSX)
 #include "ui/base/cocoa/remote_layer_api.h"
 #include "ui/gfx/mac/io_surface.h"
 #include "ui/latency_info/latency_info.h"
 #endif
 
 class GURL;
 
 namespace IPC {
 struct ChannelHandle;
 }
 
 namespace gpu {
 
 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;
 
   // Notification from GPU that the channel is destroyed.
   virtual void DidDestroyChannel(int client_id) = 0;
 
   // Tells the delegate that an offscreen context was destroyed for the provided
   // |active_url|.
   virtual void DidDestroyOffscreenContext(const GURL& active_url) = 0;
 
   // Tells the delegate that a context was lost.
   virtual void DidLoseContext(bool offscreen,
                               error::ContextLostReason reason,
                               const GURL& active_url) = 0;
 
   // 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.
   virtual void StoreShaderToDisk(int32_t client_id,
                                  const std::string& key,
                                  const std::string& shader) = 0;
 
 #if defined(OS_MACOSX)
   // Tells the delegate that an accelerated surface has swapped.
   virtual void SendAcceleratedSurfaceBuffersSwapped(
@@ skipping 14 matching lines @@
   // Sets the currently active URL.  Use GURL() to clear the URL.
   virtual void SetActiveURL(const GURL& url) = 0;
 
  protected:
   virtual ~GpuChannelManagerDelegate() {}
 };
 
 }  // namespace gpu
 
 #endif  // GPU_IPC_SERVICE_GPU_CHANNEL_MANAGER_DELEGATE_H_