Fixes bug where tabstrip won't correctly enter into stacking mode on

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

 // 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.
 
 #include "chrome/browser/ui/views/tabs/tab_strip.h"
 
 #if defined(OS_WIN)
 #include <windowsx.h>
 #endif
 
@@ skipping 1006 matching lines @@
        (event.type() == ui::ET_GESTURE_BEGIN))) {
     move_behavior = TabDragController::MOVE_VISIBILE_TABS;
   }
 #if defined(OS_WIN)
   // It doesn't make sense to drag tabs out on metro.
   if (base::win::IsMetroProcess())
     detach_behavior = TabDragController::NOT_DETACHABLE;
 #endif
   // Gestures don't automatically do a capture. We don't allow multiple drags at
   // the same time, so we explicitly capture.
-  if (event.type() == ui::ET_GESTURE_TAP_DOWN)
+  if (event.type() == ui::ET_GESTURE_BEGIN)

[sadrul, 2012/08/03 21:38:07]

Is it necessary to check that event.details().touch_points() == 1?

     GetWidget()->SetCapture(this);
   drag_controller_.reset(new TabDragController);
   drag_controller_->Init(
       this, tab, tabs, gfx::Point(x, y), tab->GetMirroredXInView(event.x()),
       selection_model, detach_behavior, move_behavior);
 }
 
 void TabStrip::ContinueDrag(views::View* view, const gfx::Point& location) {
   if (drag_controller_.get()) {
     gfx::Point screen_location(location);
@@ skipping 1310 matching lines @@
 
   int mini_tab_count = GetMiniTabCount();
   int normal_count = tab_count() - mini_tab_count;
   if (normal_count <= 1 || normal_count == mini_tab_count)
     return false;
   int x = GetStartXForNormalTabs();
   int available_width = width() - x - new_tab_button_width();
   return (Tab::GetTouchWidth() * normal_count +
           tab_h_offset() * (normal_count - 1)) > available_width;
 }