[Extensions] Show a "refresh" bubble when needed with click-to-script

chrome/browser/ui/cocoa/extensions/extension_message_bubble_bridge.mm

 // Copyright 2015 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.
 
 #include "chrome/browser/ui/cocoa/extensions/extension_message_bubble_bridge.h"
 
 #include <utility>
 
 #include "chrome/browser/extensions/extension_message_bubble_controller.h"
 #include "chrome/browser/ui/cocoa/extensions/toolbar_actions_bar_bubble_mac.h"
@@ skipping 26 matching lines @@
 }
 
 base::string16 ExtensionMessageBubbleBridge::GetDismissButtonText() {
   return controller_->delegate()->GetDismissButtonLabel();
 }
 
 base::string16 ExtensionMessageBubbleBridge::GetLearnMoreButtonText() {
   return controller_->delegate()->GetLearnMoreLabel();
 }
 
+std::string ExtensionMessageBubbleBridge::GetAnchorActionId() {
+  return controller_->GetExtensionIdList().size() == 1u ?
+      controller_->GetExtensionIdList()[0] : std::string();
+}
+
 void ExtensionMessageBubbleBridge::OnBubbleShown() {
 }
 
 void ExtensionMessageBubbleBridge::OnBubbleClosed(CloseAction action) {
   switch(action) {
     case CLOSE_DISMISS_USER_ACTION:
     case CLOSE_DISMISS_DEACTIVATION: {
       bool close_by_deactivate = action == CLOSE_DISMISS_DEACTIVATION;
       controller_->OnBubbleDismiss(close_by_deactivate);
       break;
     }
     case CLOSE_EXECUTE:
       controller_->OnBubbleAction();
       break;
     case CLOSE_LEARN_MORE:
       controller_->OnLinkClicked();
       break;
   }
 }