ozone: gpu: Add plumbing for platform-specific gpu messaging

content/browser/gpu/gpu_process_host_ui_shim.h

Index: content/browser/gpu/gpu_process_host_ui_shim.h
diff --git a/content/browser/gpu/gpu_process_host_ui_shim.h b/content/browser/gpu/gpu_process_host_ui_shim.h
index 2fe19789bfe5adf0840c4d53a58983a0d7d025fd..6cf3181e3aee99dac2a7bd4f327b65cd469f6d29 100644
--- a/content/browser/gpu/gpu_process_host_ui_shim.h
+++ b/content/browser/gpu/gpu_process_host_ui_shim.h
@@ -78,6 +78,10 @@ class GpuProcessHostUIShim : public IPC::Listener,
   CONTENT_EXPORT void SimulateCrash();
   CONTENT_EXPORT void SimulateHang();
 
+  // Called to add a listener for a particular message routing ID.

[rjkroege, 2014/06/16 21:38:49]

This comment probably should say why this is here.

+  // Returns true if succeeded.
+  void AddRoute(int32 routing_id, IPC::Listener* listener);
+
  private:
   explicit GpuProcessHostUIShim(int host_id);
   virtual ~GpuProcessHostUIShim();
@@ -104,9 +108,13 @@ class GpuProcessHostUIShim : public IPC::Listener,
                                base::TimeTicks timebase,
                                base::TimeDelta interval);
   void OnFrameDrawn(const std::vector<ui::LatencyInfo>& latency_info);
+  void OnPlatformSupportInitialized(int32 host_route_id, int32 gpu_route_id);

[rjkroege, 2014/06/16 21:38:49]

More comments about this message?

 
   // The serial number of the GpuProcessHost / GpuProcessHostUIShim pair.
   int host_id_;
+
+  // Listeners for routed messages.
+  IDMap<IPC::Listener> routes_;
 };
 
 }  // namespace content