Make SkOSWindow return the sample count and stencil bit count for its GL context.

experimental/iOSSampleApp/Shared/SkUIView.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 #import <OpenGLES/EAGL.h>
 #import <OpenGLES/ES1/gl.h>
 #import <OpenGLES/ES1/glext.h>
 #import <OpenGLES/ES2/gl.h>
 #import <OpenGLES/ES2/glext.h>
 #import <QuartzCore/QuartzCore.h>
 #import <UIKit/UIKit.h>
-#include "SkWindow.h"
-class SkOSWindow;
+#include "SkOSWindow_ios.h"
+
 class SkEvent;
 @class SkUIView;
 
 @protocol SkUIViewOptionsDelegate <NSObject>
 @optional
 // Called when the view needs to handle adding an SkOSMenu
 - (void) view:(SkUIView*)view didAddMenu:(const SkOSMenu*)menu;
 - (void) view:(SkUIView*)view didUpdateMenu:(SkOSMenu*)menu;
 @end
 
@@ skipping 10 matching lines @@
 - (id)initWithDefaults;
 - (void)setUpWindow;
 - (void)forceRedraw;
 - (void)drawInRaster;
 
 - (void)setSkTitle:(const char*)title;
 - (void)onAddMenu:(const SkOSMenu*)menu;
 - (void)onUpdateMenu:(SkOSMenu*)menu;
 - (void)postInvalWithRect:(const SkIRect*)rectOrNil;
 - (BOOL)onHandleEvent:(const SkEvent&)event;
+- (void)getAttachmentInfo:(SkOSWindow::AttachmentInfo*)info;
+
 @end