Shelf Cleanup AlternateShelfLayout P1 Attempt 3

ash/shelf/app_list_button.h

Index: ash/shelf/app_list_button.h
diff --git a/ash/shelf/app_list_button.h b/ash/shelf/app_list_button.h
index c47fd6d51ce529a2dd8d23a9e9679a86ce7beed8..2571b717005918d3b0e4bea5b88583f1d2d4e189 100644
--- a/ash/shelf/app_list_button.h
+++ b/ash/shelf/app_list_button.h
@@ -1,4 +1,4 @@
-// Copyright 2013 The Chromium Authors. All rights reserved.
+// Copyright 2014 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.
 
@@ -9,18 +9,21 @@
 
 namespace ash {
 class ShelfButtonHost;
+class ShelfWidget;
 
 // Button used for the AppList icon on the shelf.
 class AppListButton : public views::ImageButton {
  public:
-  AppListButton(views::ButtonListener* listener, ShelfButtonHost* host);
-  virtual ~AppListButton();
+  // Bounds size (inset) required for the app icon image (in pixels).
+  static const int kImageBoundsSize;
 
-  void StartLoadingAnimation();
-  void StopLoadingAnimation();
+  AppListButton(views::ButtonListener* listener,
+                ShelfButtonHost* host,
+                ShelfWidget* shelf_widget);
+  virtual ~AppListButton();
 
  protected:
-  // views::ImageButton:
+  // views::ImageButton overrides:
   virtual bool OnMousePressed(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseReleased(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseCaptureLost() OVERRIDE;
@@ -28,10 +31,17 @@ class AppListButton : public views::ImageButton {
   virtual void OnMouseMoved(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseEntered(const ui::MouseEvent& event) OVERRIDE;
   virtual void OnMouseExited(const ui::MouseEvent& event) OVERRIDE;
+  virtual void OnPaint(gfx::Canvas* canvas) OVERRIDE;
   virtual void GetAccessibleState(ui::AXViewState* state) OVERRIDE;
 
+  // ui::EventHandler overrides:
+  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE;
+
  private:
   ShelfButtonHost* host_;
+  // Reference to the shelf widget containing this button, owned by the
+  // root window controller.
+  ShelfWidget* shelf_widget_;
 
   DISALLOW_COPY_AND_ASSIGN(AppListButton);
 };