Add the plumbing to enable DRP

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 46 matching lines @@
   virtual ~AwBrowserContext();
 
   // Currently only one instance per process is supported.
   static AwBrowserContext* GetDefault();
 
   // Convenience method to returns the AwBrowserContext corresponding to the
   // given WebContents.
   static AwBrowserContext* FromWebContents(
       content::WebContents* web_contents);
 
+  static void SetDataReductionProxyEnabled(bool enabled);

[boliu, 2014/05/07 23:30:09]

AwBrowserContext is effectively global already. Why make this static?

I think we should move the retriving of the default AwBrowserContext into the
caller, and then make this not static.

Better yet, can the java method be implemented on java AwBrowserContext instead?

+
   // Maps to BrowserMainParts::PreMainMessageLoopRun.
   void PreMainMessageLoopRun();
 
   // These methods map to Add methods in visitedlink::VisitedLinkMaster.
   void AddVisitedURLs(const std::vector<GURL>& urls);
 
   net::URLRequestContextGetter* CreateRequestContext(
       content::ProtocolHandlerMap* protocol_handlers);
   net::URLRequestContextGetter* CreateRequestContextForStoragePartition(
       const base::FilePath& partition_path,
@@ skipping 48 matching lines @@
       GetGeolocationPermissionContext() OVERRIDE;
   virtual content::BrowserPluginGuestManagerDelegate*
       GetGuestManagerDelegate() OVERRIDE;
   virtual quota::SpecialStoragePolicy* GetSpecialStoragePolicy() OVERRIDE;
 
   // visitedlink::VisitedLinkDelegate implementation.
   virtual void RebuildTable(
       const scoped_refptr<URLEnumerator>& enumerator) OVERRIDE;
 
  private:
+  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<content::GeolocationPermissionContext>
       geolocation_permission_context_;
   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<DataReductionProxySettings> data_reduction_proxy_settings_;
 
   DISALLOW_COPY_AND_ASSIGN(AwBrowserContext);
 };
 
 }  // namespace android_webview
 
 #endif  // ANDROID_WEBVIEW_BROWSER_AW_BROWSER_CONTEXT_H_