blimp: Set up the CompositorDependencies for blimp in Chrome.

blimp/client/public/compositor/compositor_dependencies.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 BLIMP_CLIENT_PUBLIC_COMPOSITOR_COMPOSITOR_DEPENDENCIES_H_
 #define BLIMP_CLIENT_PUBLIC_COMPOSITOR_COMPOSITOR_DEPENDENCIES_H_
 
 #include "base/callback.h"
 #include "base/memory/ptr_util.h"
 
 namespace cc {
 class ContextProvider;
 class LayerTreeSettings;
 class SurfaceManager;
 }  // namespace cc
 
 namespace gpu {
 class GpuMemoryBufferManager;
 }  // namespace gpu
 
 namespace blimp {
 namespace client {
 
 // A set of compositor dependencies that must be provided by the embedder.  This
 // is expected to outlive all BlimpContents instances.
 class CompositorDependencies {
  public:
-  using ContextProviderCallback =
-      base::Callback<void(const scoped_refptr<cc::ContextProvider>&)>;
+  struct ContextProviders {
+    ContextProviders();
+    ~ContextProviders();
+
+    scoped_refptr<cc::ContextProvider> compositor_context_provider;
+    scoped_refptr<cc::ContextProvider> worker_context_provider;
+  };
+
+  using ContextProviderCallback = base::Callback<void(const ContextProviders&)>;
 
   virtual ~CompositorDependencies() = default;
 
   // Settings used to create all BlimpCompositor instances.
   virtual cc::LayerTreeSettings* GetLayerTreeSettings() = 0;
   virtual gpu::GpuMemoryBufferManager* GetGpuMemoryBufferManager() = 0;
   virtual cc::SurfaceManager* GetSurfaceManager() = 0;
-  virtual uint32_t AllocateSurfaceId() = 0;
+  virtual uint32_t AllocateSurfaceClientId() = 0;
 
   // This call may return synchronously if the ContextProvider has already been
   // created.
-  virtual void GetContextProvider(const ContextProviderCallback& callback) = 0;
+  virtual void GetContextProviders(const ContextProviderCallback& callback) = 0;
 };
 
 }  // namespace client
 }  // namespace blimp
 
 #endif  // BLIMP_CLIENT_PUBLIC_COMPOSITOR_COMPOSITOR_DEPENDENCIES_H_