ui: Add debug flag to show composited layer borders in ChromeOS UI.

cc/layers/surface_layer_impl.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 "cc/layers/surface_layer_impl.h"
 
 #include <stdint.h>
 
 #include "base/trace_event/trace_event_argument.h"
 #include "cc/debug/debug_colors.h"
@@ skipping 117 matching lines @@
 }
 
 void SurfaceLayerImpl::GetDebugBorderProperties(SkColor* color,
                                                 float* width) const {
   *color = DebugColors::SurfaceLayerBorderColor();
   *width = DebugColors::SurfaceLayerBorderWidth(
       layer_tree_impl() ? layer_tree_impl()->device_scale_factor() : 1);
 }
 
 void SurfaceLayerImpl::AppendRainbowDebugBorder(RenderPass* render_pass) {
-  if (!ShowDebugBorders())
+  if (!ShowDebugBorders(DebugBorderType::SURFACE))
     return;
 
   SharedQuadState* shared_quad_state =
       render_pass->CreateAndAppendSharedQuadState();
   PopulateSharedQuadState(shared_quad_state);
 
   SkColor color;
   float border_width;
   GetDebugBorderProperties(&color, &border_width);
 
@@ skipping 77 matching lines @@
   dict->SetString("surface_id", primary_surface_info_.id().ToString());
   dict->SetString("fallback_surface_id",
                   fallback_surface_info_.id().ToString());
 }
 
 const char* SurfaceLayerImpl::LayerTypeAsString() const {
   return "cc::SurfaceLayerImpl";
 }
 
 }  // namespace cc