Add command line switches and about:flag to enable FPS indicator and compositor layer tree.

webkit/glue/webpreferences.cc

 // Copyright (c) 2009 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 "webkit/glue/webpreferences.h"
 
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
@@ skipping 46 matching lines @@
       hyperlink_auditing_enabled(true),
       user_style_sheet_enabled(false),
       author_and_user_styles_enabled(true),
       frame_flattening_enabled(false),
       allow_universal_access_from_file_urls(false),
       allow_file_access_from_file_urls(false),
       webaudio_enabled(false),
       experimental_webgl_enabled(false),
       gl_multisampling_enabled(true),
       show_composited_layer_borders(false),
+      show_composited_layer_tree(false),
+      show_fps_counter(false),
       accelerated_compositing_enabled(false),
       accelerated_layers_enabled(false),
       accelerated_video_enabled(false),
       accelerated_2d_canvas_enabled(false),
       accelerated_plugins_enabled(false),
       memory_info_enabled(false),
       interactive_form_validation_enabled(true) {
 }
 
 WebPreferences::~WebPreferences() {
@@ skipping 76 matching lines @@
       WebRuntimeFeatures::isWebGLEnabled() && experimental_webgl_enabled;
   settings->setExperimentalWebGLEnabled(enable_webgl);
 
   // Disable GL multisampling if requested on command line.
   settings->setOpenGLMultisamplingEnabled(gl_multisampling_enabled);
 
   // Display colored borders around composited render layers if requested
   // on command line.
   settings->setShowDebugBorders(show_composited_layer_borders);
 
+  // Display an FPS indicator if requested on the command line.
+  settings->setShowFPSCounter(show_fps_counter);
+
+  // Display the current compositor tree as overlay if requested on
+  // the command line
+  settings->setShowPlatformLayerTree(show_composited_layer_tree);
+
   // Enable gpu-accelerated compositing if requested on the command line.
   settings->setAcceleratedCompositingEnabled(accelerated_compositing_enabled);
 
   // Enable gpu-accelerated 2d canvas if requested on the command line.
   settings->setAccelerated2dCanvasEnabled(accelerated_2d_canvas_enabled);
 
   // Enabling accelerated layers from the command line enabled accelerated
   // 3D CSS, Video, and Animations.
   settings->setAcceleratedCompositingFor3DTransformsEnabled(
       accelerated_layers_enabled);
@@ skipping 18 matching lines @@
     web_view->setInspectorSetting(WebString::fromUTF8(it->first),
                                   WebString::fromUTF8(it->second));
 
   // Tabs to link is not part of the settings. WebCore calls
   // ChromeClient::tabsToLinks which is part of the glue code.
   web_view->setTabsToLinks(tabs_to_links);
 
   settings->setInteractiveFormValidationEnabled(
       interactive_form_validation_enabled);
 }