Make long press & release to trigger context menu on tab

chrome/browser/ui/views/tabs/tab_strip.h

Index: chrome/browser/ui/views/tabs/tab_strip.h
diff --git a/chrome/browser/ui/views/tabs/tab_strip.h b/chrome/browser/ui/views/tabs/tab_strip.h
index 1b039ecb3345ba9a06d9692429007f9499bdc64d..0bd23afa39d062b25735dd3dd44ddfd9bd1d43f4 100644
--- a/chrome/browser/ui/views/tabs/tab_strip.h
+++ b/chrome/browser/ui/views/tabs/tab_strip.h
@@ -587,6 +587,15 @@ class TabStrip : public views::View,
   // 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_;