Change undefined SkGpuRenderTarget and SkGpuTexture forward declares to GrRenderTarget and GrTextur…

src/effects/SkDisplacementMapEffect.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkDisplacementMapEffect.h"
 #include "SkFlattenableBuffers.h"
 #include "SkUnPreMultiply.h"
@@ skipping 262 matching lines @@
     SkScalar fScale;
 
     typedef GrEffect INHERITED;
 };
 
 bool SkDisplacementMapEffect::filterImageGPU(Proxy* proxy, const SkBitmap& src, SkBitmap* result) {
     SkBitmap colorBM;
     if (!SkImageFilterUtils::GetInputResultGPU(getColorInput(), proxy, src, &colorBM)) {
         return false;
     }
-    GrTexture* color = (GrTexture*) colorBM.getTexture();
+    GrTexture* color = colorBM.getTexture();
     SkBitmap displacementBM;
     if (!SkImageFilterUtils::GetInputResultGPU(getDisplacementInput(), proxy, src, &displacementBM)) {
         return false;
     }
-    GrTexture* displacement = (GrTexture*) displacementBM.getTexture();
+    GrTexture* displacement = displacementBM.getTexture();
     GrContext* context = color->getContext();
 
     GrTextureDesc desc;
     desc.fFlags = kRenderTarget_GrTextureFlagBit | kNoStencil_GrTextureFlagBit;
     desc.fWidth = src.width();
     desc.fHeight = src.height();
     desc.fConfig = kSkia8888_GrPixelConfig;
 
     GrAutoScratchTexture ast(context, desc);
     SkAutoTUnref<GrTexture> dst(ast.detach());
@@ skipping 226 matching lines @@
                                                   colorTex);
 
     colorKey <<= GrGLEffectMatrix::kKeyBits;
     EffectKey xKey = displacementMap.xChannelSelector() << (2 * GrGLEffectMatrix::kKeyBits);
     EffectKey yKey = displacementMap.yChannelSelector() << (2 * GrGLEffectMatrix::kKeyBits +
                                                             SkDisplacementMapEffect::kKeyBits);
 
     return xKey | yKey | displKey | colorKey;
 }
 #endif