Implement aura::WindowPortMus::CreateCompositorFrameSink()

ui/aura/mus/window_tree_client.cc

 // 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.
 
 #include "ui/aura/mus/window_tree_client.h"
 
 #include <stddef.h>
 
 #include <string>
 #include <utility>
@@ skipping 1364 matching lines @@
 
   window->SetCursorFromServer(cursor);
 }
 
 void WindowTreeClient::OnWindowSurfaceChanged(
     Id window_id,
     const cc::SurfaceInfo& surface_info) {
   WindowMus* window = GetWindowByServerId(window_id);
   if (!window)
     return;
-
-  // If the parent is informed of a child's surface then that surface ID is
-  // guaranteed to be available in the display compositor so we set it as the
-  // fallback. If surface synchronization is enabled, the primary SurfaceInfo
-  // is created by the embedder, and the LocalSurfaceId is allocated by the
-  // embedder.
-  window->SetFallbackSurfaceInfo(surface_info);
+  window->SetSurfaceInfoFromServer(surface_info);

[Fady Samuel, 2017/05/30 18:36:42]

Please restore this.

[Peng, 2017/05/31 20:12:25]

As we discussed this offline. The SetPrimarySurfaceInfo is not used anymore. So
it is better to have this change.

 }
 
 void WindowTreeClient::OnDragDropStart(
     const std::unordered_map<std::string, std::vector<uint8_t>>& mime_data) {
   drag_drop_controller_->OnDragDropStart(mojo::UnorderedMapToMap(mime_data));
 }
 
 void WindowTreeClient::OnDragEnter(Id window_id,
                                    uint32_t key_state,
                                    const gfx::Point& position,
@@ skipping 708 matching lines @@
 }
 
 void WindowTreeClient::OnCompositingLockStateChanged(
     ui::Compositor* compositor) {}
 
 void WindowTreeClient::OnCompositingShuttingDown(ui::Compositor* compositor) {
   compositor->RemoveObserver(this);
 }
 
 }  // namespace aura