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

content/renderer/renderer_webapplicationcachehost_impl.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_RENDERER_WEBAPPLICATIONCACHEHOST_IMPL_H_
 #define CONTENT_RENDERER_RENDERER_WEBAPPLICATIONCACHEHOST_IMPL_H_
 
-#include "content/common/content_export.h"
 #include "webkit/appcache/web_application_cache_host_impl.h"
 
 namespace content {
 class RenderViewImpl;
 
 class RendererWebApplicationCacheHostImpl
     : public appcache::WebApplicationCacheHostImpl {
  public:
   RendererWebApplicationCacheHostImpl(
       RenderViewImpl* render_view,
       WebKit::WebApplicationCacheHostClient* client,
       appcache::AppCacheBackend* backend);
 
   // appcache::WebApplicationCacheHostImpl methods.
   virtual void OnLogMessage(appcache::LogLevel log_level,
                             const std::string& message) OVERRIDE;
   virtual void OnContentBlocked(const GURL& manifest_url) OVERRIDE;
   virtual void OnCacheSelected(const appcache::AppCacheInfo& info) OVERRIDE;
 
-  CONTENT_EXPORT static void DisableLoggingForTesting();
-
  private:
   RenderViewImpl* GetRenderView();
 
   int routing_id_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDERER_WEBAPPLICATIONCACHEHOST_IMPL_H_