content/gpu: Set up a mojom connection between browser and gpu.

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 3e2b99e8b48e2f06e7be1d59e4ed0e3701de8bac..f8337d4fbc2a35bb336a03d539036cf440630bea 100644
--- a/content/gpu/gpu_child_thread.h
+++ b/content/gpu/gpu_child_thread.h
@@ -28,6 +28,7 @@
 #include "gpu/ipc/service/x_util.h"
 #include "mojo/public/cpp/bindings/binding_set.h"
 #include "services/service_manager/public/interfaces/service_factory.mojom.h"
+#include "services/ui/gpu/interfaces/gpu_main.mojom.h"
 #include "ui/gfx/native_widget_types.h"
 
 namespace gpu {
@@ -82,6 +83,8 @@ class GpuChildThread : public ChildThreadImpl,
   gpu::GpuWatchdogThread* watchdog_thread() { return watchdog_thread_.get(); }
 
  private:
+  void CreateGpuMainService(ui::mojom::GpuMainAssociatedRequest request);
+
   // ChildThreadImpl:.
   bool Send(IPC::Message* msg) override;
   bool OnControlMessageReceived(const IPC::Message& msg) override;