renderer-mus: Plumb LocalSurfaceId into RenderWidgetCompositor

content/renderer/render_widget.cc

 // Copyright (c) 2012 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 "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 1265 matching lines @@
       compositor_.get(), compositor_.get(), animation_host.get(),
       compositor_deps_, device_scale_factor_, screen_info_);
   compositor_->Initialize(std::move(layer_tree_host),
                           std::move(animation_host));
 
   compositor_->SetIsForOopif(for_oopif_);
   compositor_->setViewportSize(physical_backing_size_);
   OnDeviceScaleFactorChanged();
   compositor_->SetRasterColorSpace(screen_info_.icc_profile.GetColorSpace());
   compositor_->SetContentSourceId(current_content_source_id_);
+#if defined(USE_AURA)
+  RendererWindowTreeClient* window_tree_client =
+      RendererWindowTreeClient::Get(routing_id_);
+  if (window_tree_client)
+    compositor_->SetLocalSurfaceId(window_tree_client->local_surface_id());
+#endif
   // For background pages and certain tests, we don't want to trigger
   // CompositorFrameSink creation.
   if (compositor_never_visible_ || !RenderThreadImpl::current())
     compositor_->SetNeverVisible();
 
   StartCompositor();
   DCHECK_NE(MSG_ROUTING_NONE, routing_id_);
   compositor_->SetFrameSinkId(
       cc::FrameSinkId(RenderThread::Get()->GetClientId(), routing_id_));
 
@@ skipping 1029 matching lines @@
     // browser side (https://crbug.com/669219).
     // If there is no WebFrameWidget, then there will be no
     // InputMethodControllers for a WebLocalFrame.
     return nullptr;
   }
   return static_cast<blink::WebFrameWidget*>(GetWebWidget())
       ->getActiveWebInputMethodController();
 }
 
 }  // namespace content