Add flag for drawing layers to screen with Ganesh

cc/layers/layer_impl.cc

 // Copyright 2011 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/layer_impl.h"
 
 #include "base/debug/trace_event.h"
 #include "base/stringprintf.h"
 #include "cc/animation/animation_registrar.h"
 #include "cc/animation/scrollbar_animation_controller.h"
@@ skipping 176 matching lines @@
   }
 
   *color = DebugColors::ContainerLayerBorderColor();
   *width = DebugColors::ContainerLayerBorderWidth(layer_tree_impl());
 }
 
 void LayerImpl::AppendDebugBorderQuad(
     QuadSink* quad_sink,
     const SharedQuadState* shared_quad_state,
     AppendQuadsData* append_quads_data) const {
+  SkColor color;
+  float width;
+  GetDebugBorderProperties(&color, &width);
+  AppendDebugBorderQuad(
+      quad_sink, shared_quad_state, append_quads_data, color, width);
+}
+
+void LayerImpl::AppendDebugBorderQuad(QuadSink* quad_sink,
+                                      const SharedQuadState* shared_quad_state,
+                                      AppendQuadsData* append_quads_data,
+                                      SkColor color,
+                                      float width) const {
   if (!ShowDebugBorders())
     return;
 
-  SkColor color;
-  float width;
-  GetDebugBorderProperties(&color, &width);
-
   gfx::Rect content_rect(content_bounds());
   scoped_ptr<DebugBorderDrawQuad> debug_border_quad =
       DebugBorderDrawQuad::Create();
   debug_border_quad->SetNew(shared_quad_state, content_rect, color, width);
   quad_sink->Append(debug_border_quad.PassAs<DrawQuad>(), append_quads_data);
 }
 
 bool LayerImpl::HasDelegatedContent() const {
   return false;
 }
@@ skipping 816 matching lines @@
 
 size_t LayerImpl::GPUMemoryUsageInBytes() const { return 0; }
 
 scoped_ptr<base::Value> LayerImpl::AsValue() const {
   scoped_ptr<base::DictionaryValue> state(new base::DictionaryValue());
   AsValueInto(state.get());
   return state.PassAs<base::Value>();
 }
 
 }  // namespace cc