cc: Avoid expensive RenderingStats collection.

webkit/compositor_bindings/web_layer_tree_view_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 "web_layer_tree_view_impl.h"
 
 #include "base/command_line.h"
 #include "base/string_number_conversions.h"
 #include "cc/font_atlas.h"
 #include "cc/input_handler.h"
@@ skipping 35 matching lines @@
     settings.acceleratedAnimationEnabled = webSettings.acceleratedAnimationEnabled;
     settings.pageScalePinchZoomEnabled = webSettings.pageScalePinchZoomEnabled;
     settings.refreshRate = webSettings.refreshRate;
     settings.defaultTileSize = webSettings.defaultTileSize;
     settings.maxUntiledLayerSize = webSettings.maxUntiledLayerSize;
     settings.initialDebugState.showFPSCounter = webSettings.showFPSCounter;
     settings.initialDebugState.showPaintRects = webSettings.showPaintRects;
     settings.initialDebugState.showPlatformLayerTree = webSettings.showPlatformLayerTree;
     settings.initialDebugState.showDebugBorders = webSettings.showDebugBorders;
     settings.implSidePainting = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kEnableImplSidePainting);
+    settings.recordRenderingStats = webSettings.recordRenderingStats;

[jamesr, 2013/01/30 19:13:27]

this code can see command line switches - why can't you hoist the command line
flag in question to somewhere this can see?

[danakj, 2013/01/30 19:15:09]

Hm, ya I can move it from content/ to cc/. That doesn't seem as appropriate as
the flag is not a cc-only flag though? Or is there somewhere else you're
thinking?

 
     settings.calculateTopControlsPosition = CommandLine::ForCurrentProcess()->HasSwitch(switches::kEnableTopControlsPositionCalculation);
     if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTopControlsHeight)) {
         std::string controls_height_str =
             CommandLine::ForCurrentProcess()->GetSwitchValueASCII(switches::kTopControlsHeight);
         int controls_height;
         if (base::StringToInt(controls_height_str, &controls_height) && controls_height > 0)
             settings.topControlsHeightPx = controls_height;
     }
     if (settings.calculateTopControlsPosition && (settings.topControlsHeightPx <= 0 || !settings.compositorFrameMessage)) {
@@ skipping 238 matching lines @@
 {
     m_client->didCompleteSwapBuffers();
 }
 
 void WebLayerTreeViewImpl::scheduleComposite()
 {
     m_client->scheduleComposite();
 }
 
 } // namespace WebKit