mus: Make sure window parenting happens in the window server.

services/ui/ws/gpu_host.h

 // Copyright 2016 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 SERVICES_UI_WS_GPU_HOST_H_
 #define SERVICES_UI_WS_GPU_HOST_H_
 
 #include "base/single_thread_task_runner.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/threading/thread.h"
@@ skipping 16 matching lines @@
 
 // Sets up connection from clients to the real service implementation in the GPU
 // process.
 class GpuHost : public mojom::GpuHost {
  public:
   explicit GpuHost(GpuHostDelegate* delegate);
   ~GpuHost() override;
 
   void Add(mojom::GpuRequest request);
 
+  void OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget);
+  void OnAcceleratedWidgetDestroyed(gfx::AcceleratedWidget widget);
+
   // Requests a cc::mojom::DisplayCompositor interface from mus-gpu.
   void CreateDisplayCompositor(cc::mojom::DisplayCompositorRequest request,
                                cc::mojom::DisplayCompositorClientPtr client);
 
  private:
+  void OnBadMessageFromGpu();
+
   // mojom::GpuHost:
   void DidInitialize(const gpu::GPUInfo& gpu_info) override;
   void DidCreateOffscreenContext(const GURL& url) override;
   void DidDestroyOffscreenContext(const GURL& url) override;
   void DidDestroyChannel(int32_t client_id) override;
   void DidLoseContext(bool offscreen,
                       gpu::error::ContextLostReason reason,
                       const GURL& active_url) override;
+  void SetChildSurface(gpu::SurfaceHandle parent,
+                       gpu::SurfaceHandle child) override;
   void StoreShaderToDisk(int32_t client_id,
                          const std::string& key,
                          const std::string& shader) override;
 
   GpuHostDelegate* const delegate_;
   int32_t next_client_id_;
   scoped_refptr<base::SingleThreadTaskRunner> main_thread_task_runner_;
   mojom::GpuServicePtr gpu_service_;
   mojo::Binding<mojom::GpuHost> gpu_host_binding_;
   gpu::GPUInfo gpu_info_;
   std::unique_ptr<ServerGpuMemoryBufferManager> gpu_memory_buffer_manager_;
 
   mojom::GpuMainPtr gpu_main_;
 
   // TODO(fsamuel): GpuHost should not be holding onto |gpu_main_impl|
   // because that will live in another process soon.
   std::unique_ptr<GpuMain> gpu_main_impl_;
 
   DISALLOW_COPY_AND_ASSIGN(GpuHost);
 };
 
 }  // namespace ws
 }  // namespace ui
 
 #endif  // SERVICES_UI_WS_GPU_HOST_H_