ash:Shelf - Added UMA stats for ShelfAlignment

ash/shelf/shelf_view.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 ASH_SHELF_SHELF_VIEW_H_
 #define ASH_SHELF_SHELF_VIEW_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 114 matching lines @@
       const std::string& app_id,
       const gfx::Point& location_in_screen_coordinates) OVERRIDE;
   virtual bool Drag(const gfx::Point& location_in_screen_coordinates) OVERRIDE;
   virtual void EndDrag(bool cancel) OVERRIDE;
 
   // Return the view model for test purposes.
   const views::ViewModel* const view_model_for_test() const {
     return view_model_.get();
   }
 
+  // See Launcher::RecordCurrentAlignmentForUMAHistogram.
+  void RecordCurrentAlignmentForUMAHistogram(const char* histogram_name);
+
  private:
   friend class ash::test::ShelfViewTestAPI;
 
   class FadeOutAnimationDelegate;
   class StartFadeAnimationDelegate;
 
   struct IdealBounds {
     gfx::Rect overflow_bounds;
   };
 
@@ skipping 269 matching lines @@
   // Holds ShelfLayoutManager.
   ShelfLayoutManager* layout_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfView);
 };
 
 }  // namespace internal
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_VIEW_H_