Add optimization for CHROMIUM_subscribe_uniform extension.

content/public/browser/render_process_host.h

 // Copyright (c) 2012 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 CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 #define CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_
 
 #include "base/basictypes.h"
 #include "base/id_map.h"
 #include "base/process/kill.h"
 #include "base/process/process_handle.h"
 #include "base/supports_user_data.h"
 #include "content/common/content_export.h"
 #include "ipc/ipc_channel_proxy.h"
 #include "ipc/ipc_sender.h"
 #include "ui/gfx/native_widget_types.h"
 
 class GURL;
 struct ViewMsg_SwapOut_Params;
 
 namespace base {
 class TimeDelta;
 }
 
+namespace gpu {
+union ValueState;
+}
+
 namespace content {
 class BrowserContext;
 class BrowserMessageFilter;
 class RenderProcessHostObserver;
 class RenderWidgetHost;
 class ServiceRegistry;
 class StoragePartition;
 struct GlobalRequestID;
 
 // Interface that represents the browser side of the browser <-> renderer
@@ skipping 197 matching lines @@
   // Returns the ServiceRegistry for this process.
   virtual ServiceRegistry* GetServiceRegistry() = 0;
 
   // PlzNavigate
   // Returns the time the first call to Init completed successfully (after a new
   // renderer process was created); further calls to Init won't change this
   // value.
   // Note: Do not use! Will disappear after PlzNavitate is completed.
   virtual const base::TimeTicks& GetInitTimeForNavigationMetrics() const = 0;
 
+  // Returns whether or not the CHROMIUM_subscribe_uniform WebGL extension
+  // is currently enabled
+  virtual bool SubscribeUniformEnabled() const = 0;
+
+  // Handlers for subscription target changes to update subscription_set_
+  virtual void OnAddSubscription(unsigned int target) = 0;
+  virtual void OnRemoveSubscription(unsigned int target) = 0;
+
+  // Send a new ValueState to the Gpu Service to update a subscription target
+  virtual void SendUpdateValueState(
+      unsigned int target, const gpu::ValueState& state) = 0;
+
   // Static management functions -----------------------------------------------
 
   // Flag to run the renderer in process.  This is primarily
   // for debugging purposes.  When running "in process", the
   // browser maintains a single RenderProcessHost which communicates
   // to a RenderProcess which is instantiated in the same process
   // with the Browser.  All IPC between the Browser and the
   // Renderer is the same, it's just not crossing a process boundary.
 
   static bool run_renderer_in_process();
@@ skipping 38 matching lines @@
   static void SetMaxRendererProcessCount(size_t count);
 
   // Returns the current maximum number of renderer process hosts kept by the
   // content module.
   static size_t GetMaxRendererProcessCount();
 };
 
 }  // namespace content.
 
 #endif  // CONTENT_PUBLIC_BROWSER_RENDER_PROCESS_HOST_H_