p1 mus+ash chrome renders ui and content

ui/views/mus/window_tree_host_mus.cc

 // Copyright 2015 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/views/mus/window_tree_host_mus.h"
 
+#include "components/bitmap_uploader/bitmap_uploader.h"
 #include "mojo/application/public/interfaces/shell.mojom.h"
 #include "ui/aura/window.h"
 #include "ui/aura/window_event_dispatcher.h"
+#include "ui/base/view_prop.h"
 #include "ui/events/event.h"
 #include "ui/views/mus/input_method_mus.h"
 #include "ui/views/mus/native_widget_mus.h"
 #include "ui/views/mus/platform_window_mus.h"
 
 namespace views {
 
 ////////////////////////////////////////////////////////////////////////////////
 // WindowTreeHostMus, public:
 
 WindowTreeHostMus::WindowTreeHostMus(mojo::Shell* shell,
                                      NativeWidgetMus* native_widget,
                                      mus::Window* window,
                                      mus::mojom::SurfaceType surface_type)
     : native_widget_(native_widget),
       show_state_(ui::PLATFORM_WINDOW_STATE_UNKNOWN) {
   SetPlatformWindow(make_scoped_ptr(new PlatformWindowMus(this, window)));
   // The location of events is already transformed, and there is no way to
   // correctly determine the reverse transform. So, don't attempt to transform
   // event locations, else the root location is wrong.
   // TODO(sky): we need to transform for device scale though.
   dispatcher()->set_transform_events(false);
   compositor()->SetHostHasTransparentBackground(true);
 
+  bitmap_uploader_.reset(new bitmap_uploader::BitmapUploader(window));
+  bitmap_uploader_->Init(shell);
+  prop_.reset(
+      new ui::ViewProp(GetAcceleratedWidget(),
+                       bitmap_uploader::kBitmapUploaderForAcceleratedWidget,
+                       bitmap_uploader_.get()));
+
   input_method_.reset(new InputMethodMUS(this, window));
   SetSharedInputMethod(input_method_.get());
 }
 
 WindowTreeHostMus::~WindowTreeHostMus() {
   DestroyCompositor();
   DestroyDispatcher();
 }
 
 PlatformWindowMus* WindowTreeHostMus::platform_window() {
@@ skipping 23 matching lines @@
   if (active)
     GetInputMethod()->OnFocus();
   else
     GetInputMethod()->OnBlur();
   if (native_widget_)
     native_widget_->OnActivationChanged(active);
   WindowTreeHostPlatform::OnActivationChanged(active);
 }
 
 }  // namespace views