Make long press & release to trigger context menu on tab

chrome/browser/ui/views/tabs/tab_strip.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_TABS_TAB_STRIP_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 569 matching lines @@
   // See description above SetLayoutType().
   bool adjust_layout_;
 
   // Only used while in touch mode.
   scoped_ptr<StackedTabStripLayout> touch_layout_;
 
   // If true the layout type is set to TAB_STRIP_LAYOUT_SHRINK when the mouse
   // exits the tabstrip (as determined using MouseWatcher).
   bool reset_to_shrink_on_exit_;
 
+  // If there was tab dragging from touch gestrue.
+  bool was_dragging_;
+
+  // If there was long press gesture event.
+  bool had_gesture_long_press_;
+
+  // Position of the last long press gesture event.
+  gfx::Point last_long_press_location_;
+
   // Location of the mouse at the time of the last move.
   gfx::Point last_mouse_move_location_;
 
   // Time of the last mouse move event.
   base::TimeTicks last_mouse_move_time_;
 
   // Number of mouse moves.
   int mouse_move_count_;
 
   // Timer used when a tab is closed and we need to relayout. Only used when a
   // tab close comes from a touch device.
   base::OneShotTimer<TabStrip> resize_layout_timer_;
 
   // True if tabs are painted as rectangular light-bars.
   bool immersive_style_;
 
   // Our observers.
   typedef ObserverList<TabStripObserver> TabStripObservers;
   TabStripObservers observers_;
 
   DISALLOW_COPY_AND_ASSIGN(TabStrip);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_STRIP_H_