Add a Display and ContextProvider concept to mojom, use to recreate

shell/android/native_viewport_application_loader.h

 // Copyright 2014 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 MOJO_SHELL_ANDROID_NATIVE_VIEWPORT_APPLICATION_LOADER_H_
 #define MOJO_SHELL_ANDROID_NATIVE_VIEWPORT_APPLICATION_LOADER_H_
 
 #include "mojo/public/cpp/application/application_delegate.h"
 #include "mojo/public/cpp/application/interface_factory.h"
 #include "mojo/services/gpu/public/interfaces/gpu.mojom.h"
 #include "mojo/services/keyboard/public/interfaces/keyboard.mojom.h"
 #include "mojo/services/native_viewport/public/interfaces/native_viewport.mojom.h"
 #include "services/gles2/gpu_impl.h"
 #include "shell/application_manager/application_loader.h"
 
+namespace gles2 {
+class GpuState;
+}
+
 namespace mojo {
 
 class ApplicationImpl;
 
 namespace shell {
 
 class NativeViewportApplicationLoader : public ApplicationLoader,
                                         public ApplicationDelegate,
                                         public InterfaceFactory<Keyboard>,
                                         public InterfaceFactory<NativeViewport>,
@@ skipping 19 matching lines @@
               InterfaceRequest<NativeViewport> request) override;
 
   // InterfaceFactory<Gpu> implementation.
   void Create(ApplicationConnection* connection,
               InterfaceRequest<Gpu> request) override;
 
   // InterfaceFactory<Keyboard> implementation.
   void Create(ApplicationConnection* connection,
               InterfaceRequest<Keyboard> request) override;
 
-  scoped_refptr<gles2::GpuImpl::State> gpu_state_;
+  scoped_refptr<gles2::GpuState> gpu_state_;
   scoped_ptr<ApplicationImpl> app_;
 
   DISALLOW_COPY_AND_ASSIGN(NativeViewportApplicationLoader);
 };
 
 }  // namespace shell
 }  // namespace mojo
 
 #endif  // MOJO_SHELL_ANDROID_NATIVE_VIEWPORT_APPLICATION_LOADER_H_