Move HyperlinkButtonCell to /ui/base/cocoa/controls.

chrome/browser/ui/cocoa/hyperlink_button_cell.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.
-
-#import <Cocoa/Cocoa.h>
-#include "base/mac/scoped_nsobject.h"
-
-// A HyperlinkButtonCell is used to create an NSButton that looks and acts
-// like a hyperlink. The default styling is to look like blue, underlined text
-// and to have the pointingHand cursor on mouse over.
-//
-// To use in Interface Builder:
-//  1. Drag out an NSButton.
-//  2. Double click on the button so you have the cell component selected.
-//  3. In the Identity panel of the inspector, set the custom class to this.
-//  4. In the Attributes panel, change the Bezel to Square.
-//  5. In the Size panel, set the Height to 16.
-@interface HyperlinkButtonCell : NSButtonCell {
-  base::scoped_nsobject<NSColor> textColor_;
-  BOOL shouldUnderline_;
-  BOOL underlineOnHover_;
-  BOOL mouseIsInside_;
-}
-@property(nonatomic, retain) NSColor* textColor;
-@property(nonatomic, assign) BOOL underlineOnHover;
-@property(nonatomic, assign) BOOL shouldUnderline;
-
-+ (NSColor*)defaultTextColor;
-
-// Helper function to create a button with HyperLinkButtonCell as its cell.
-+ (NSButton*)buttonWithString:(NSString*)string;
-
-@end
-
-@interface HyperlinkButtonCell (ExposedForTesting)
-- (NSDictionary*)linkAttributes;
-@end