Add layer name into frame viewer

cc/layers/layer.cc

 // Copyright 2010 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.h"
 
 #include <algorithm>
 
 #include "base/location.h"
 #include "base/metrics/histogram.h"
@@ skipping 657 matching lines @@
                                                base::Passed(&result)));
 }
 
 void Layer::PushPropertiesTo(LayerImpl* layer) {
   layer->SetAnchorPoint(anchor_point_);
   layer->SetAnchorPointZ(anchor_point_z_);
   layer->SetBackgroundColor(background_color_);
   layer->SetBounds(paint_properties_.bounds);
   layer->SetContentBounds(content_bounds());
   layer->SetContentsScale(contents_scale_x(), contents_scale_y());
-  layer->SetDebugName(debug_name_);
+  layer->SetDebugName(DebugName());

[enne (OOO), 2013/07/03 17:40:43]

How about only pulling the name when tracing is active?  See
https://code.google.com/p/chromium/codesearch#chromium/src/cc/resources/pictu...
for an example.

[qiankun, 2013/07/04 04:34:04]

OK.

   layer->SetCompositingReasons(compositing_reasons_);
   layer->SetDoubleSided(double_sided_);
   layer->SetDrawCheckerboardForMissingTiles(
       draw_checkerboard_for_missing_tiles_);
   layer->SetForceRenderSurface(force_render_surface_);
   layer->SetDrawsContent(DrawsContent());
   layer->SetFilters(filters());
   layer->SetFilter(filter());
   layer->SetBackgroundFilters(background_filters());
   layer->SetMasksToBounds(masks_to_bounds_);
@@ skipping 198 matching lines @@
 
 RenderingStatsInstrumentation* Layer::rendering_stats_instrumentation() const {
   return layer_tree_host_->rendering_stats_instrumentation();
 }
 
 bool Layer::SupportsLCDText() const {
   return false;
 }
 
 }  // namespace cc