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

chrome/browser/ui/toolbar/test_toolbar_actions_bar_bubble_delegate.cc

 // 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/toolbar/test_toolbar_actions_bar_bubble_delegate.h"
 
 #include "base/logging.h"
 #include "base/macros.h"
 
 class TestToolbarActionsBarBubbleDelegate::DelegateImpl
     : public ToolbarActionsBarBubbleDelegate {
  public:
   explicit DelegateImpl(TestToolbarActionsBarBubbleDelegate* parent)
       : parent_(parent) {}
   ~DelegateImpl() override {}
 
  private:
   base::string16 GetHeadingText() override { return parent_->heading_; }
   base::string16 GetBodyText() override { return parent_->body_; }
   base::string16 GetItemListText() override { return parent_->item_list_; }
   base::string16 GetActionButtonText() override { return parent_->action_; }
   base::string16 GetDismissButtonText() override { return parent_->dismiss_; }
   base::string16 GetLearnMoreButtonText() override {
     return parent_->learn_more_;
   }
+  std::string GetAnchorActionId() override { return std::string(); }
   void OnBubbleShown() override {
     CHECK(!parent_->shown_);
     parent_->shown_ = true;
   }
   void OnBubbleClosed(CloseAction action) override {
     CHECK(!parent_->close_action_);
     parent_->close_action_.reset(new CloseAction(action));
   }
 
   TestToolbarActionsBarBubbleDelegate* parent_;
@@ skipping 15 matching lines @@
   // If the bubble didn't close, it means that it still owns the DelegateImpl,
   // which has a weak ptr to this object. Make sure that this class always
   // outlives the bubble.
   CHECK(close_action_);
 }
 
 scoped_ptr<ToolbarActionsBarBubbleDelegate>
 TestToolbarActionsBarBubbleDelegate::GetDelegate() {
   return scoped_ptr<ToolbarActionsBarBubbleDelegate>(new DelegateImpl(this));
 }