Introduce the notion of a "layout test mode" instead of turning individual flags on and off

content/renderer/devtools/devtools_client.h

 // 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.
 
 #ifndef CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CLIENT_H_
 #define CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CLIENT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 16 matching lines @@
 // corresponding DevToolsAgent object.
 // TODO(yurys): now the client is almost empty later it will delegate calls to
 // code in glue
 class CONTENT_EXPORT DevToolsClient
   : public RenderViewObserver,
     NON_EXPORTED_BASE(public WebKit::WebDevToolsFrontendClient) {
  public:
   explicit DevToolsClient(RenderViewImpl* render_view);
   virtual ~DevToolsClient();
 
-  static void EnableDevToolsFrontendTesting();
  private:
   // RenderView::Observer implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // WebDevToolsFrontendClient implementation.
   virtual void sendMessageToBackend(const WebKit::WebString&) OVERRIDE;
 
   virtual void activateWindow() OVERRIDE;
   virtual void changeAttachedWindowHeight(unsigned height) OVERRIDE;
   virtual void closeWindow() OVERRIDE;
@@ skipping 15 matching lines @@
   void OnDispatchOnInspectorFrontend(const std::string& message);
 
   scoped_ptr<WebKit::WebDevToolsFrontend> web_tools_frontend_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsClient);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_DEVTOOLS_DEVTOOLS_CLIENT_H_