Revert "gpu: Use mojom API for creating gpu channel."

content/gpu/gpu_child_thread.h

Index: content/gpu/gpu_child_thread.h
diff --git a/content/gpu/gpu_child_thread.h b/content/gpu/gpu_child_thread.h
index f44ce993d887b70e68c6ba86c81e4be6a827fd00..db030ecf1a114cc70409b6ba177b766c63dba3d9 100644
--- a/content/gpu/gpu_child_thread.h
+++ b/content/gpu/gpu_child_thread.h
@@ -46,6 +46,7 @@ class TargetServices;
 
 namespace content {
 class GpuServiceFactory;
+struct EstablishChannelParams;
 
 // The main thread of the GPU child process. There will only ever be one of
 // these per process. It does process initialization and shutdown. It forwards
@@ -122,6 +123,7 @@ class GpuChildThread : public ChildThreadImpl,
 #endif
   void OnGpuSwitched();
 
+  void OnEstablishChannel(const EstablishChannelParams& params);
   void OnCloseChannel(int32_t client_id);
   void OnLoadedShader(const std::string& shader);
   void OnDestroyGpuMemoryBuffer(gfx::GpuMemoryBufferId id,