Seems incorrect to se device_scale_factor in SetLocalSurfaceId.

components/display_compositor/gpu_root_compositor_frame_sink.cc

 // Copyright 2017 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 "components/display_compositor/gpu_root_compositor_frame_sink.h"
 
 #include "cc/surfaces/compositor_frame_sink_support.h"
 #include "cc/surfaces/display.h"
 
 namespace display_compositor {
@@ skipping 52 matching lines @@
   DCHECK(display_);
   display_->SetColorSpace(color_space);
 }
 
 void GpuRootCompositorFrameSink::SetOutputIsSecure(bool secure) {
   DCHECK(display_);
   display_->SetOutputIsSecure(secure);
 }
 
 void GpuRootCompositorFrameSink::SetLocalSurfaceId(
-    const cc::LocalSurfaceId& local_surface_id,
+    const cc::LocalSurfaceId& local_surface_id) {
+  display_->SetLocalSurfaceId(local_surface_id);
+}
+
+void GpuRootCompositorFrameSink::SetDeviceScaleFactor(
     float scale_factor) {
-  display_->SetLocalSurfaceId(local_surface_id, scale_factor);
+  display_->SetDeviceScaleFactor(scale_factor);
 }
 
 void GpuRootCompositorFrameSink::EvictFrame() {
   support_->EvictFrame();
 }
 
 void GpuRootCompositorFrameSink::SetNeedsBeginFrame(bool needs_begin_frame) {
   support_->SetNeedsBeginFrame(needs_begin_frame);
 }
 
@@ skipping 70 matching lines @@
 }
 
 void GpuRootCompositorFrameSink::OnPrivateConnectionLost() {
   private_connection_lost_ = true;
   // Request destruction of |this| only if both connections are lost.
   delegate_->OnPrivateConnectionLost(support_->frame_sink_id(),
                                      client_connection_lost_);
 }
 
 }  // namespace display_compositor