Use no-op statistics collecting object for WebView.

android_webview/browser/aw_browser_context.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 ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_
 #define ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_
 
 #include <vector>
 
 #include "android_webview/browser/aw_download_manager_delegate.h"
@@ skipping 12 matching lines @@
 
 namespace content {
 class ResourceContext;
 class SSLHostStateDelegate;
 class WebContents;
 }
 
 namespace data_reduction_proxy {
 class DataReductionProxyConfigurator;
 class DataReductionProxySettings;
+class DataReductionProxyStatisticsPrefs;
 }
 
 namespace net {
 class CookieStore;
 }
 
 namespace visitedlink {
 class VisitedLinkMaster;
 }
 
@@ skipping 66 matching lines @@
   virtual content::BrowserPluginGuestManager* GetGuestManager() OVERRIDE;
   virtual storage::SpecialStoragePolicy* GetSpecialStoragePolicy() OVERRIDE;
   virtual content::PushMessagingService* GetPushMessagingService() OVERRIDE;
   virtual content::SSLHostStateDelegate* GetSSLHostStateDelegate() OVERRIDE;
 
   // visitedlink::VisitedLinkDelegate implementation.
   virtual void RebuildTable(
       const scoped_refptr<URLEnumerator>& enumerator) OVERRIDE;
 
  private:
+  void CreateDataReductionProxyStatisticsIfNecessary();
   static bool data_reduction_proxy_enabled_;
 
   // The file path where data for this context is persisted.
   base::FilePath context_storage_path_;
 
   JniDependencyFactory* native_factory_;
   scoped_refptr<net::CookieStore> cookie_store_;
   scoped_refptr<AwURLRequestContextGetter> url_request_context_getter_;
   scoped_refptr<AwQuotaManagerBridge> quota_manager_bridge_;
   scoped_ptr<AwFormDatabaseService> form_database_service_;
 
   AwDownloadManagerDelegate download_manager_delegate_;
 
   scoped_ptr<visitedlink::VisitedLinkMaster> visitedlink_master_;
   scoped_ptr<content::ResourceContext> resource_context_;
 
   scoped_ptr<PrefService> user_pref_service_;
 
   scoped_ptr<data_reduction_proxy::DataReductionProxyConfigurator>
       data_reduction_proxy_configurator_;
+  scoped_ptr<data_reduction_proxy::DataReductionProxyStatisticsPrefs>
+      data_reduction_proxy_statistics_;
   scoped_ptr<data_reduction_proxy::DataReductionProxySettings>
       data_reduction_proxy_settings_;
 
   DISALLOW_COPY_AND_ASSIGN(AwBrowserContext);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_