[Mac] Unspoofable infobars v3.

chrome/browser/ui/cocoa/infobars/infobar_gradient_view.h

 // Copyright (c) 2011 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_
 #pragma once
 
 #include "chrome/browser/tab_contents/infobar_delegate.h"
 #import "chrome/browser/ui/cocoa/vertical_gradient_view.h"
 
 #import <Cocoa/Cocoa.h>
 
 // A custom view that draws the background gradient for an infobar.
-@interface InfoBarGradientView : VerticalGradientView
+@interface InfoBarGradientView : VerticalGradientView {
+ @private
+  NSPoint tipApex_;
+}
+
+// The point, in this view's coordinates, at which the infobar tip is the
+// highest and pointing at the omnibox decoration.
+@property(assign, nonatomic) NSPoint tipApex;
 
 // Sets the infobar type. This will change the view's gradient.
 - (void)setInfobarType:(InfoBarDelegate::Type)infobarType;
 
 @end
 
 #endif  // CHROME_BROWSER_UI_COCOA_INFOBARS_INFOBAR_GRADIENT_VIEW_H_