Implement aura::WindowPortMus::CreateCompositorFrameSink()

ui/aura/mus/window_port_mus.cc

 // 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.
 
 #include "ui/aura/mus/window_port_mus.h"
 
 #include "base/memory/ptr_util.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/client/transient_window_client.h"
 #include "ui/aura/mus/client_surface_embedder.h"
@@ skipping 75 matching lines @@
   window_tree_client_->SetCanAcceptDrops(this, can_accept_drops);
 }
 
 void WindowPortMus::Embed(
     ui::mojom::WindowTreeClientPtr client,
     uint32_t flags,
     const ui::mojom::WindowTree::EmbedCallback& callback) {
   window_tree_client_->Embed(window_, std::move(client), flags, callback);
 }
 
-std::unique_ptr<cc::CompositorFrameSink>
-WindowPortMus::RequestCompositorFrameSink(
-    scoped_refptr<cc::ContextProvider> context_provider,
-    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager) {
-  std::unique_ptr<ui::ClientCompositorFrameSinkBinding>
-      compositor_frame_sink_binding;
-  std::unique_ptr<ui::ClientCompositorFrameSink> compositor_frame_sink =
-      ui::ClientCompositorFrameSink::Create(
-          std::move(context_provider), gpu_memory_buffer_manager,
-          &compositor_frame_sink_binding,
-          window_tree_client_->enable_surface_synchronization_);
-  AttachCompositorFrameSink(std::move(compositor_frame_sink_binding));
-  return std::move(compositor_frame_sink);
-}
-
 void WindowPortMus::AttachCompositorFrameSink(
     std::unique_ptr<ui::ClientCompositorFrameSinkBinding>
         compositor_frame_sink_binding) {
   window_tree_client_->AttachCompositorFrameSink(
       server_id(), compositor_frame_sink_binding->TakeFrameSinkRequest(),
       mojo::MakeProxy(compositor_frame_sink_binding->TakeFrameSinkClient()));
 }
 
 WindowPortMus::ServerChangeIdType WindowPortMus::ScheduleChange(
     const ServerChangeType type,
@@ skipping 367 matching lines @@
       GetPropertyConverter()->GetTransportNameForPropertyKey(key);
   // TODO(sky): investigate to see if we need to compare data. In particular do
   // we ever have a case where changing a property cascades into changing the
   // same property?
   if (!RemoveChangeByTypeAndData(ServerChangeType::PROPERTY, change_data))
     window_tree_client_->OnWindowMusPropertyChanged(this, key, old_value,
                                                     std::move(data));
 }
 
 std::unique_ptr<cc::CompositorFrameSink>
-WindowPortMus::CreateCompositorFrameSink() {
-  // TODO(penghuang): Implement it for Mus.
-  return nullptr;
+WindowPortMus::CreateCompositorFrameSink(
+    scoped_refptr<cc::ContextProvider> context_provider,
+    gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager) {
+  DCHECK_NE(window_mus_type(), WindowMusType::EMBED_IN_OWNER);
+  DCHECK_NE(window_mus_type(), WindowMusType::TOP_LEVEL_IN_WM);
+  std::unique_ptr<ui::ClientCompositorFrameSinkBinding> frame_sink_binding;
+  std::unique_ptr<ui::ClientCompositorFrameSink> frame_sink =
+      ui::ClientCompositorFrameSink::Create(
+          std::move(context_provider), gpu_memory_buffer_manager,
+          &frame_sink_binding,
+          window_tree_client_->enable_surface_synchronization_);
+  AttachCompositorFrameSink(std::move(frame_sink_binding));
+  return std::move(frame_sink);
 }
 
 cc::SurfaceId WindowPortMus::GetSurfaceId() const {
-  // TODO(penghuang): Implement it for Mus.
+  // This method is only used by exo unittests which are not running against
+  // mus, so don't implement it now.
   return cc::SurfaceId();
 }
 
 void WindowPortMus::UpdatePrimarySurfaceInfo() {
   bool embeds_surface = window_mus_type() == WindowMusType::TOP_LEVEL_IN_WM ||
                         window_mus_type() == WindowMusType::EMBED_IN_OWNER;
   if (!embeds_surface || !window_tree_client_->enable_surface_synchronization_)
     return;
 
   if (!frame_sink_id_.is_valid() || !local_surface_id_.is_valid())
     return;
 
   SetPrimarySurfaceInfo(
       cc::SurfaceInfo(cc::SurfaceId(frame_sink_id_, local_surface_id_),
                       ScaleFactorForDisplay(window_), last_surface_size_));
 }
 
 void WindowPortMus::UpdateClientSurfaceEmbedder() {
-  bool embeds_surface = window_mus_type() == WindowMusType::TOP_LEVEL_IN_WM ||
-                        window_mus_type() == WindowMusType::EMBED_IN_OWNER;
-  if (!embeds_surface)
-    return;
-
   if (!client_surface_embedder_) {
     client_surface_embedder_ = base::MakeUnique<ClientSurfaceEmbedder>(
         window_, window_tree_client_->normal_client_area_insets_);
   }
 
   client_surface_embedder_->SetPrimarySurfaceInfo(primary_surface_info_);
   client_surface_embedder_->SetFallbackSurfaceInfo(fallback_surface_info_);
 }
 
 }  // namespace aura