Add an extension override bubble and warning box for proxy extensions.

chrome/browser/extensions/extension_message_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_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_
 
 #include <string>
 #include "chrome/browser/extensions/extension_message_bubble.h"
 #include "extensions/browser/browser_context_keyed_api_factory.h"
@@ skipping 24 matching lines @@
 
     virtual bool ShouldIncludeExtension(const std::string& extension_id) = 0;
     virtual void AcknowledgeExtension(
         const std::string& extension_id,
         BubbleAction action) = 0;
     virtual void PerformAction(const ExtensionIdList& list) = 0;
     virtual void OnClose() {}
 
     // Text for various UI labels shown in the bubble.
     virtual base::string16 GetTitle() const = 0;
-    virtual base::string16 GetMessageBody() const = 0;
+    // Fetches the message to show in the body. |anchored_to_browser_action|
+    // will be true if the bubble is anchored against a specific extension
+    // icon, allowing the bubble to show a different message than when it is
+    // anchored against something else (e.g. show "This extension has..."
+    // instead of "An extension has...").
+    virtual base::string16 GetMessageBody(
+        bool anchored_to_browser_action) const = 0;
     virtual base::string16 GetOverflowText(
         const base::string16& overflow_count) const = 0;
     virtual base::string16 GetLearnMoreLabel() const = 0;
     virtual GURL GetLearnMoreUrl() const = 0;
     virtual base::string16 GetActionButtonLabel() const = 0;
     virtual base::string16 GetDismissButtonLabel() const = 0;
 
     // Whether to show a list of extensions in the bubble.
     virtual bool ShouldShowExtensionList() const = 0;
 
@@ skipping 49 matching lines @@
 
   // Whether this class has initialized.
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageBubbleController);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_CONTROLLER_H_