Disable Ganesh layer hoister in a more revertable form

src/gpu/GrLayerHoister.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
-#include "GrContext.h"
-#include "GrLayerCache.h"
-#include "GrLayerHoister.h"
-#include "GrRecordReplaceDraw.h"
-
 #include "SkBigPicture.h"
 #include "SkCanvas.h"
 #include "SkImageFilterCache.h"
 #include "SkLayerInfo.h"
 #include "SkRecordDraw.h"
 #include "SkSpecialImage.h"
 #include "SkSurface.h"
 
+#include "GrLayerHoister.h"
+
+#if !defined(SK_IGNORE_GPU_LAYER_HOISTING) && SK_SUPPORT_GPU
+
+#include "GrContext.h"
+#include "GrLayerCache.h"
+#include "GrRecordReplaceDraw.h"
+
 // Create the layer information for the hoisted layer and secure the
 // required texture/render target resources.
 static void prepare_for_hoisting(GrLayerCache* layerCache,
                                  const SkPicture* topLevelPicture,
                                  const SkMatrix& initialMat,
                                  const SkLayerInfo::BlockInfo& info,
                                  const SkIRect& srcIR,
                                  const SkIRect& dstIR,
                                  SkTDArray<GrHoistedLayer>* needRendering,
                                  SkTDArray<GrHoistedLayer>* recycled,
@@ skipping 357 matching lines @@
 #if !GR_CACHE_HOISTED_LAYERS
 
     // This code completely clears out the atlas. It is required when
     // caching is disabled so the atlas doesn't fill up and force more
     // free floating layers
     layerCache->purgeAll();
 #endif
 
     layerCache->end();
 }
+
+#endif