Move Infobars core files to the Infobars component

chrome/browser/ui/cocoa/infobars/infobar_gradient_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 CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_GRADIENT_VIEW_H_
 #define CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_GRADIENT_VIEW_H_
 
-#include "chrome/browser/infobars/infobar_delegate.h"
 #import "chrome/browser/ui/cocoa/vertical_gradient_view.h"
+#include "components/infobars/core/infobar_delegate.h"
 
 #import <Cocoa/Cocoa.h>
 
 // A custom view that draws the background gradient for an infobar.
 @interface InfoBarGradientView : VerticalGradientView {
  @private
   CGFloat arrowHeight_;
   CGFloat arrowHalfWidth_;
   CGFloat arrowX_;
   BOOL hasTip_;
 }
 
 @property(assign, nonatomic) CGFloat arrowHeight;
 @property(assign, nonatomic) CGFloat arrowHalfWidth;
 @property(assign, nonatomic) CGFloat arrowX;
 @property(assign, nonatomic) BOOL hasTip;
 
 // Sets the infobar type. This will change the view's gradient.
-- (void)setInfobarType:(InfoBarDelegate::Type)infobarType;
+- (void)setInfobarType:(infobars::InfoBarDelegate::Type)infobarType;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_GRADIENT_VIEW_H_