[iOS] Integration of ChromeNetLog and NetExportUI

ios/chrome/browser/application_context.h

 // Copyright 2014 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 IOS_CHROME_BROWSER_APPLICATION_CONTEXT_H_
 #define IOS_CHROME_BROWSER_APPLICATION_CONTEXT_H_
 
 #include <string>
 
 #include "base/macros.h"
 
 namespace ios {
 class ChromeBrowserStateManager;
 }
 
 namespace metrics {
 class MetricsService;
 }
 
 namespace net {
 class URLRequestContextGetter;
 }
 
+namespace net_log {
+class ChromeNetLog;
+}
+
 namespace policy {
 class BrowserPolicyConnector;
 }
 
 namespace rappor {
 class RapporService;
 }
 
 class ApplicationContext;
 class PrefService;
@@ skipping 17 matching lines @@
 
   // Gets the ChromeBrowserStateManager used by this application.
   virtual ios::ChromeBrowserStateManager* GetChromeBrowserStateManager() = 0;
 
   // Gets the MetricsService used by this application.
   virtual metrics::MetricsService* GetMetricsService() = 0;
 
   // Gets the policy connector, creating and starting it if necessary.
   virtual policy::BrowserPolicyConnector* GetBrowserPolicyConnector() = 0;
 
-  // Gets the RapporService. May returns null.
+  // Gets the RapporService. May return null.
   virtual rappor::RapporService* GetRapporService() = 0;
 
+  // Gets the ChromeNetLog.
+  virtual net_log::ChromeNetLog* GetNetLog() = 0;
+
  protected:
   // Sets the global ApplicationContext instance.
   static void SetApplicationContext(ApplicationContext* context);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(ApplicationContext);
 };
 
 #endif  // IOS_CHROME_BROWSER_APPLICATION_CONTEXT_H_