Revert of Delete SkImageDecoder

src/gpu/GrLayerCache.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 GrLayerCache_DEFINED
 #define GrLayerCache_DEFINED
 
 
 #include "GrLayerAtlas.h"
 #include "GrTexture.h"
 #include "GrRect.h"
 
 #include "SkChecksum.h"
 #include "SkImageFilter.h"
 #include "SkMessageBus.h"
-#include "SkPaint.h"
 #include "SkPicture.h"
 #include "SkTDynamicHash.h"
 
 // Set to 0 to disable caching of hoisted layers
 #define GR_CACHE_HOISTED_LAYERS 0
 
 // GrPictureInfo stores the atlas plots used by a single picture. A single
 // plot may be used to store layers from multiple pictures.
 struct GrPictureInfo {
 public:
@@ skipping 393 matching lines @@
         SkASSERT(fPlotLocks[plotIdx] > 0);
         --fPlotLocks[plotIdx];
     }
 
     // for testing
     friend class TestingAccess;
     int numLayers() const { return fLayerHash.count(); }
 };
 
 #endif