views: Update event-related API to use PointF/RectF instead of Point/Rect.

ash/shelf/shelf_button.h

 // Copyright 2013 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_BUTTON_H_
 #define ASH_SHELF_SHELF_BUTTON_H_
 
 #include "ash/ash_export.h"
 #include "ui/gfx/shadow_value.h"
 #include "ui/views/controls/button/custom_button.h"
@@ skipping 65 matching lines @@
   // implementation, by overriding CreateIconView().
   class IconView : public views::ImageView {
    public:
     IconView();
     virtual ~IconView();
 
     void set_icon_size(int icon_size) { icon_size_ = icon_size; }
     int icon_size() const { return icon_size_; }
 
     // views::View overrides.
-    virtual bool HitTestRect(const gfx::Rect& rect) const OVERRIDE;
+    virtual bool HitTestRect(const gfx::RectF& rect) const OVERRIDE;
 
    private:
     // Set to non-zero to force icons to be resized to fit within a square,
     // while maintaining original proportions.
     int icon_size_;
 
     DISALLOW_COPY_AND_ASSIGN(IconView);
   };
 
   // View overrides:
@@ skipping 51 matching lines @@
   // If non-null the destuctor sets this to true. This is set while the menu is
   // showing and used to detect if the menu was deleted while running.
   bool* destroyed_flag_;
 
   DISALLOW_COPY_AND_ASSIGN(ShelfButton);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELF_SHELF_BUTTON_H_