Use SkImageCacherator in SkImages

src/image/SkImage.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkCanvas.h"
 #include "SkData.h"
@@ skipping 140 matching lines @@
     if (nullptr == subset && this->width() == newWidth && this->height() == newHeight) {
         return SkRef(const_cast<SkImage*>(this));
     }
 
     return as_IB(this)->onNewImage(newWidth, newHeight, subset, quality);
 }
 
 #if SK_SUPPORT_GPU
 
 GrTexture* SkImage::getTexture() const {
-    return as_IB(this)->getTexture();
+    return as_IB(this)->peekTexture();
 }
 
 bool SkImage::isTextureBacked() const { return SkToBool(as_IB(this)->getTexture()); }
 
 GrBackendObject SkImage::getTextureHandle(bool flushPendingGrContextIO) const {
     GrTexture* texture = as_IB(this)->getTexture();
     if (texture) {
         GrContext* context = texture->getContext();
         if (context) {            
             if (flushPendingGrContextIO) {
@@ skipping 169 matching lines @@
 
 SkImage* SkImage::NewFromAdoptedTexture(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 SkImage* SkImage::NewFromTextureCopy(GrContext*, const GrBackendTextureDesc&, SkAlphaType) {
     return nullptr;
 }
 
 #endif