ash::ShelfView: CHECK against potentially bad static_casts.

ash/shelf/shelf_button.cc

 // 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.
 
 #include "ash/shelf/shelf_button.h"
 
 #include <algorithm>
 
 #include "ash/ash_constants.h"
 #include "ash/ash_switches.h"
@@ skipping 186 matching lines @@
   // handling.
   set_interactive(false);
 }
 
 ShelfButton::IconView::~IconView() {
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // ShelfButton
 
+// static
+const char ShelfButton::kViewClassName[] = "ash/ShelfButton";
+
 ShelfButton* ShelfButton::Create(views::ButtonListener* listener,
                                  ShelfButtonHost* host,
                                  ShelfLayoutManager* shelf_layout_manager) {
   ShelfButton* button = new ShelfButton(listener, host, shelf_layout_manager);
   button->Init();
   return button;
 }
 
 ShelfButton::ShelfButton(views::ButtonListener* listener,
                          ShelfButtonHost* host,
@@ skipping 97 matching lines @@
 
   if (!destroyed) {
     destroyed_flag_ = NULL;
     // The menu will not propagate mouse events while its shown. To address,
     // the hover state gets cleared once the menu was shown (and this was not
     // destroyed).
     ClearState(STATE_HOVERED);
   }
 }
 
+const char* ShelfButton::GetClassName() const {
+  return kViewClassName;
+}
+
 bool ShelfButton::OnMousePressed(const ui::MouseEvent& event) {
   CustomButton::OnMousePressed(event);
   host_->PointerPressedOnButton(this, ShelfButtonHost::MOUSE, event);
   return true;
 }
 
 void ShelfButton::OnMouseReleased(const ui::MouseEvent& event) {
   CustomButton::OnMouseReleased(event);
   host_->PointerReleasedOnButton(this, ShelfButtonHost::MOUSE, false);
 }
@@ skipping 200 matching lines @@
             views::ImageView::CENTER,
             views::ImageView::CENTER,
             views::ImageView::LEADING));
     bar_->SchedulePaint();
   }
 
   bar_->SetVisible(bar_id != 0 && state_ != STATE_NORMAL);
 }
 
 }  // namespace ash