update example

include/views/SkOSWindow_Android.h

 /*
  * Copyright 2011 Skia
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkOSWindow_Android_DEFINED
 #define SkOSWindow_Android_DEFINED
 
 #include "SkWindow.h"
 
 class SkOSWindow : public SkWindow {
 public:
     SkOSWindow(void*) {}
     ~SkOSWindow() {}
 
     enum SkBackEndTypes {
         kNone_BackEndType,
         kNativeGL_BackEndType,
     };
 
-    struct AttachmentInfo {
-        int fSampleCount;
-        int fStencilBits;
-    };
-
     bool attach(SkBackEndTypes attachType, int msaaSampleCount, AttachmentInfo* info);
     void detach() {}
     void present() {}
 
     virtual void onPDFSaved(const char title[], const char desc[],
         const char path[]);
 
 protected:
     // overrides from SkWindow
     virtual void onHandleInval(const SkIRect&);
     virtual void onSetTitle(const char title[]);
 
 private:
     typedef SkWindow INHERITED;
 };
 
 #endif