Mac: Fix SDK 10.11 Compile errors after clang roll in r387792

chrome/browser/ui/cocoa/base_bubble_controller.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.
 
 #import <Cocoa/Cocoa.h>
 
 #include <memory>
 
 #include "components/bubble/bubble_reference.h"
 
@@ skipping 70 matching lines @@
                      offset:(NSPoint)offset;
 
 
 // For subclasses that do not load from a XIB, this will simply set the instance
 // variables appropriately. This will also replace the |-[self window]|'s
 // contentView with an instance of InfoBubbleView.
 - (id)initWithWindow:(NSWindow*)theWindow
         parentWindow:(NSWindow*)parentWindow
           anchoredAt:(NSPoint)anchoredAt;
 
+// Closes the bubble with BUBBLE_CLOSE_CANCELED.
+- (IBAction)cancel:(id)sender;
+
 // Creates an autoreleased horizontal separator view with a given frame. The
 // height of the frame is ignored.
 - (NSBox*)horizontalSeparatorWithFrame:(NSRect)frame;
 
 // Creates an autoreleased vertical separator view with a given frame. The
 // width of frame is ignored.
 - (NSBox*)verticalSeparatorWithFrame:(NSRect)frame;
 
 
 @end
 
 // Methods for use by subclasses.
 @interface BaseBubbleController (Protected)
 // Registers event taps *after* the window is shown so that the bubble is
 // dismissed when it resigns key. This only needs to be called if
 // |-showWindow:| is overriden and does not call super. Noop on OSes <10.7.
 - (void)registerKeyStateEventTap;
 @end