Wrench Icon: Only animate low severity status once

chrome/browser/ui/cocoa/toolbar/wrench_toolbar_button_cell.h

 // Copyright (c) 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 CHROME_BROWSER_UI_COCOA_TOOLBAR_WRENCH_TOOLBAR_BUTTON_CELL_H_
 #define CHROME_BROWSER_UI_COCOA_TOOLBAR_WRENCH_TOOLBAR_BUTTON_CELL_H_
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/memory/scoped_ptr.h"
 #import "chrome/browser/ui/cocoa/clickhold_button_cell.h"
 #include "chrome/browser/ui/toolbar/wrench_icon_painter.h"
 
 class WrenchIconPainterDelegateMac;
 
 // Cell for the wrench toolbar button. This is used to draw the wrench icon
 // and paint severity levels.
 @interface WrenchToolbarButtonCell : ClickHoldButtonCell {
  @private
   scoped_ptr<WrenchIconPainter> wrenchIconPainter_;
   scoped_ptr<WrenchIconPainterDelegateMac> delegate_;
 }
 
-- (void)setSeverity:(WrenchIconPainter::Severity)severity;
+- (void)setSeverity:(WrenchIconPainter::Severity)severity
+      shouldAnimate:(BOOL)shouldAnimate;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_TOOLBAR_WRENCH_TOOLBAR_BUTTON_CELL_H_