Add UMA metrics to measure the effectiveness of views fuzzing

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 82 matching lines @@
   // Start/stop the mini-tab title animation.
   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
+  // 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_;
+  }
+
   views::GlowHoverController* hover_controller() {
     return &hover_controller_;
   }
 
   // Returns the minimum possible size of a single unselected Tab.
   static gfx::Size GetMinimumUnselectedSize();
   // Returns the minimum possible size of a selected Tab. Selected tabs must
   // always show a close button and have a larger minimum size than unselected
   // tabs.
   static gfx::Size GetMinimumSelectedSize();
@@ skipping 200 matching lines @@
   scoped_ptr<ui::LinearAnimation> icon_animation_;
 
   scoped_refptr<ui::AnimationContainer> animation_container_;
 
   scoped_ptr<TabAudioIndicator> tab_audio_indicator_;
 
   views::ImageButton* close_button_;
 
   ui::ThemeProvider* theme_provider_;
 
+  bool tab_activated_with_last_gesture_begin_;
+
   views::GlowHoverController hover_controller_;
 
   // The bounds of various sections of the display.
   gfx::Rect favicon_bounds_;
   gfx::Rect title_bounds_;
 
   // The offset used to paint the inactive background image.
   gfx::Point background_offset_;
 
   struct TabImage {
@@ skipping 23 matching lines @@
   static int font_height_;
 
   // 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_