Add base:: namespace to string16 in chrome/browser/extensions.

chrome/browser/extensions/suspicious_extension_bubble_controller.h

 // Copyright (c) 2013 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 CHROME_BROWSER_EXTENSIONS_SUSPICIOUS_EXTENSION_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_EXTENSIONS_SUSPICIOUS_EXTENSION_BUBBLE_CONTROLLER_H_
 
 #include <string>
 #include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/browser/extensions/extension_message_bubble_controller.h"
@@ skipping 24 matching lines @@
 
   // ExtensionMessageBubbleController::Delegate methods.
   virtual bool ShouldIncludeExtension(const std::string& extension_id) OVERRIDE;
   virtual void AcknowledgeExtension(
       const std::string& extension_id,
       ExtensionMessageBubbleController::BubbleAction user_action) OVERRIDE;
   virtual void PerformAction(const ExtensionIdList& list) OVERRIDE;
   virtual base::string16 GetTitle() const OVERRIDE;
   virtual base::string16 GetMessageBody() const OVERRIDE;
   virtual base::string16 GetOverflowText(
-      const string16& overflow_count) const OVERRIDE;
+      const base::string16& overflow_count) const OVERRIDE;
   virtual base::string16 GetLearnMoreLabel() const OVERRIDE;
   virtual GURL GetLearnMoreUrl() const OVERRIDE;
   virtual base::string16 GetActionButtonLabel() const OVERRIDE;
   virtual base::string16 GetDismissButtonLabel() const OVERRIDE;
   virtual bool ShouldShowExtensionList() const OVERRIDE;
-  virtual std::vector<string16> GetExtensions() OVERRIDE;
+  virtual std::vector<base::string16> GetExtensions() OVERRIDE;
   virtual void LogExtensionCount(size_t count) OVERRIDE;
   virtual void LogAction(
       ExtensionMessageBubbleController::BubbleAction action) OVERRIDE;
  private:
   friend class ProfileKeyedAPIFactory<
       SuspiciousExtensionBubbleController>;
 
   // ProfileKeyedAPI implementation.
   static const char* service_name() {
     return "SuspiciousExtensionBubbleController";
   }
   static const bool kServiceRedirectedInIncognito = true;
 
   // Our extension service. Weak, not owned by us.
   ExtensionService* service_;
 
   // A weak pointer to the profile we are associated with. Not owned by us.
   Profile* profile_;
 
   DISALLOW_COPY_AND_ASSIGN(SuspiciousExtensionBubbleController);
 };
 
 template <>
 void ProfileKeyedAPIFactory<
     SuspiciousExtensionBubbleController>::DeclareFactoryDependencies();
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_SUSPICIOUS_EXTENSION_BUBBLE_CONTROLLER_H_