Add tests for the BrowserActionsContainer in overflow mode

chrome/browser/ui/views/toolbar/browser_actions_container.h

 // Copyright 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_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_
 #define CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_
 
 #include "base/observer_list.h"
 #include "chrome/browser/extensions/extension_keybinding_registry.h"
 #include "chrome/browser/extensions/extension_toolbar_model.h"
@@ skipping 125 matching lines @@
   // specifies which view is the |owner_view|. For documentation of
   // |main_container|, see class comments.
   BrowserActionsContainer(Browser* browser,
                           views::View* owner_view,
                           BrowserActionsContainer* main_container);
   virtual ~BrowserActionsContainer();
 
   void Init();
 
   // Get the number of browser actions being displayed.
-  int num_browser_actions() const { return browser_action_views_.size(); }
+  size_t num_browser_actions() const { return browser_action_views_.size(); }
 
   // Whether we are performing resize animation on the container.
   bool animating() const { return animation_target_size_ > 0; }
 
   // Returns the chevron, if any.
   views::View* chevron() { return chevron_; }
   const views::View* chevron() const { return chevron_; }
 
   // Returns the profile this container is associated with.
   Profile* profile() const { return profile_; }
@@ skipping 274 matching lines @@
 
   // Handles delayed showing of the overflow menu when hovering.
   base::WeakPtrFactory<BrowserActionsContainer> show_menu_task_factory_;
 
   ObserverList<BrowserActionsContainerObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserActionsContainer);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TOOLBAR_BROWSER_ACTIONS_CONTAINER_H_