Remove a SkImageDecoder reference from SkPicture.h

src/gpu/GrLayerHoister.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrLayerHoister_DEFINED
 #define GrLayerHoister_DEFINED
 
+#include "SkMatrix.h"
 #include "SkPicture.h"
 #include "SkTDArray.h"
 
 class GrAccelData;
 struct GrCachedLayer;
 class GrReplacements;
 struct SkRect;
 
 class GrHoistedLayer {
 public:
@@ skipping 46 matching lines @@
         @param nonAtlased Unneeded layers in their own textures
         @param recycled   Unneeded layers that did not require rendering
     */
     static void UnlockLayers(GrContext* context,
                              const SkTDArray<GrHoistedLayer>& atlased,
                              const SkTDArray<GrHoistedLayer>& nonAtlased,
                              const SkTDArray<GrHoistedLayer>& recycled);
 };
 
 #endif