Fix stability and data racing issues, coalesce more updates for JumpList

chrome/browser/ui/views/frame/browser_view.h

 // Copyright (c) 2012 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_FRAME_BROWSER_VIEW_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_
 
 #include <map>
 #include <memory>
 #include <string>
@@ skipping 670 matching lines @@
 
   std::unique_ptr<ExclusiveAccessBubbleViews> exclusive_access_bubble_;
 
   std::unique_ptr<NewBackShortcutBubble> new_back_shortcut_bubble_;
   base::TimeTicks last_back_shortcut_press_time_;
 
 #if defined(OS_WIN)
   // Helper class to listen for completion of first page load.
   std::unique_ptr<LoadCompleteListener> load_complete_listener_;
 
   // The custom JumpList for Windows 7.

[grt (UTC plus 2), 2017/06/12 20:43:38]

nit: remove "7" since the jumplist applies to all versions of Windows that
Chrome runs on.

[chengx, 2017/06/12 22:05:30]

Done.

-  scoped_refptr<JumpList> jumplist_;
+  JumpList* jumplist_;

[grt (UTC plus 2), 2017/06/12 20:43:38]

 = nullptr;

[chengx, 2017/06/12 22:05:30]

Done.

 #endif
 
   // The timer used to update frames for the Loading Animation.
   base::RepeatingTimer loading_animation_timer_;
 
   views::UnhandledKeyboardEventHandler unhandled_keyboard_event_handler_;
 
   // If this flag is set then SetFocusToLocationBar() will set focus to the
   // location bar even if the browser window is not active.
   bool force_location_bar_focus_;
 
   std::unique_ptr<ImmersiveModeController> immersive_mode_controller_;
 
   std::unique_ptr<WebContentsCloseHandler> web_contents_close_handler_;
 
   // The class that registers for keyboard shortcuts for extension commands.
   std::unique_ptr<ExtensionKeybindingRegistryViews>
       extension_keybinding_registry_;
 
   std::unique_ptr<BrowserWindowHistogramHelper> histogram_helper_;
 
   mutable base::WeakPtrFactory<BrowserView> activate_modal_dialog_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserView);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_BROWSER_VIEW_H_