[WIP] Allow scroll events to permanently change the default gesture handler in RootView

chrome/browser/ui/views/tabs/tab.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_H_
 #define CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_
 
 #include <list>
 #include <string>
 
@@ skipping 78 matching lines @@
   void StartMiniTabTitleAnimation();
   void StopMiniTabTitleAnimation();
 
   // Set the background offset used to match the image in the inactive tab
   // to the frame image.
   void set_background_offset(const gfx::Point& offset) {
     background_offset_ = offset;
   }
 
   // Returns true if this tab became the active tab selected in
-  // response to the last ui::ET_GESTURE_BEGIN gesture dispatched to
+  // response to the last ui::ET_GESTURE_TAP_DOWN gesture dispatched to
   // this tab. Only used for collecting UMA metrics.
   // See ash/touch/touch_uma.cc.
-  bool tab_activated_with_last_gesture_begin() const {
-    return tab_activated_with_last_gesture_begin_;
+  bool tab_activated_with_last_tap_down() const {
+    return tab_activated_with_last_tap_down_;
   }
 
   views::GlowHoverController* hover_controller() {
     return &hover_controller_;
   }
 
   // Returns the inset within the first dragged tab to use when calculating the
   // "drag insertion point".  If we simply used the x-coordinate of the tab,
   // we'd be calculating based on a point well before where the user considers
   // the tab to "be".  The value here is chosen to "feel good" based on the
@@ skipping 24 matching lines @@
   static int GetImmersiveHeight();
 
  private:
   friend class TabTest;
   FRIEND_TEST_ALL_PREFIXES(TabTest, CloseButtonLayout);
 
   friend class TabStripTest;
   FRIEND_TEST_ALL_PREFIXES(TabStripTest, TabHitTestMaskWhenStacked);
   FRIEND_TEST_ALL_PREFIXES(TabStripTest, ClippedTabCloseButton);
 
+  friend class TabDragController;
+  friend class TabDragControllerTest;
+  FRIEND_TEST_ALL_PREFIXES(TabDragControllerTest, DragWithGesture);
+
   // The animation object used to swap the favicon with the sad tab icon.
   class FaviconCrashAnimation;
   class TabCloseButton;
 
   // Contains a cached image and the values used to generate it.
   struct ImageCacheEntry {
     ImageCacheEntry();
     ~ImageCacheEntry();
 
     // ID of the resource used.
@@ skipping 180 matching lines @@
   // Media indicator fade-in/out animation (i.e., only on show/hide, not a
   // continuous animation).
   scoped_ptr<gfx::Animation> media_indicator_animation_;
   TabMediaState animating_media_state_;
 
   scoped_refptr<gfx::AnimationContainer> animation_container_;
 
   views::ImageButton* close_button_;
   views::Label* title_;
 
-  bool tab_activated_with_last_gesture_begin_;
+  bool tab_activated_with_last_tap_down_;
 
   views::GlowHoverController hover_controller_;
 
   // The bounds of various sections of the display.
   gfx::Rect favicon_bounds_;
   gfx::Rect media_indicator_bounds_;
 
   // The offset used to paint the inactive background image.
   gfx::Point background_offset_;
 
@@ skipping 24 matching lines @@
   SkColor close_button_color_;
 
   // As the majority of the tabs are inactive, and painting tabs is slowish,
   // we cache a handful of the inactive tab backgrounds here.
   static ImageCache* image_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(Tab);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_TABS_TAB_H_