Add SkSpecialImage::extractSubset & NewFromPixmap

gm/image.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include <functional>
 #include "gm.h"
+#include "SkAutoPixmapStorage.h"
 #include "SkData.h"
 #include "SkCanvas.h"
 #include "SkRandom.h"
 #include "SkStream.h"
 #include "SkSurface.h"
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
 #endif
 
@@ skipping 486 matching lines @@
         }
         if (context) {
             SkAutoTUnref<SkImage> texImage(image->newTextureImage(context));
             if (texImage) {
                 canvas->drawImage(texImage, 0, 0);
             }
         }
         canvas->translate(image->width() + kPad, 0);
     }
 }