Use a single flag for enabling experimental WebKit features.

content/renderer/render_thread_impl.cc

 // Copyright (c) 2012 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 "content/renderer/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 682 matching lines @@
       !command_line.HasSwitch(switches::kDisableFileSystem));
 
   WebRuntimeFeatures::enableJavaScriptI18NAPI(
       !command_line.HasSwitch(switches::kDisableJavaScriptI18NAPI));
 
   WebRuntimeFeatures::enableGamepad(true);
 
   WebRuntimeFeatures::enableQuota(true);
 
   WebRuntimeFeatures::enableShadowDOM(
-      command_line.HasSwitch(switches::kEnableShadowDOM));
+      command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures));
 
   WebRuntimeFeatures::enableStyleScoped(
-      command_line.HasSwitch(switches::kEnableStyleScoped));
+      command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures));
 
   WebRuntimeFeatures::enableCSSExclusions(
-      command_line.HasSwitch(switches::kEnableCssExclusions));
+      command_line.HasSwitch(switches::kEnableExperimentalWebKitFeatures));
 
   FOR_EACH_OBSERVER(RenderProcessObserver, observers_, WebKitInitialized());
 
   devtools_agent_message_filter_ = new DevToolsAgentFilter();
   AddFilter(devtools_agent_message_filter_.get());
 
   if (content::GetContentClient()->renderer()->
          RunIdleHandlerWhenWidgetsHidden()) {
     ScheduleIdleHandler(kLongIdleHandlerDelayMs);
   }
@@ skipping 427 matching lines @@
 
 scoped_refptr<base::MessageLoopProxy>
 RenderThreadImpl::GetFileThreadMessageLoopProxy() {
   DCHECK(message_loop() == MessageLoop::current());
   if (!file_thread_.get()) {
     file_thread_.reset(new base::Thread("Renderer::FILE"));
     file_thread_->Start();
   }
   return file_thread_->message_loop_proxy();
 }