Towards removing getTexture() from SkImage

src/image/SkImage_Gpu.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 "SkImage_Gpu.h"
 #include "GrContext.h"
 #include "GrDrawContext.h"
@@ skipping 18 matching lines @@
     if (!ctx) {
         // the texture may have been abandoned, so we have to check
         return NULL;
     }
     // TODO: Change signature of onNewSurface to take a budgeted param.
     const SkSurface::Budgeted budgeted = SkSurface::kNo_Budgeted;
     return SkSurface::NewRenderTarget(ctx, budgeted, info, fSampleCountForNewSurfaces, &props);
 }
 
 extern void SkTextureImageApplyBudgetedDecision(SkImage* image) {
-    if (image->getTexture()) {
+    if (as_IB(image)->getTexture()) {
         ((SkImage_Gpu*)image)->applyBudgetDecision();
     }
 }
 
 SkShader* SkImage_Gpu::onNewShader(SkShader::TileMode tileX, SkShader::TileMode tileY,
                                    const SkMatrix* localMatrix) const {
     SkBitmap bm;
     GrWrapTextureInBitmap(fTexture, this->width(), this->height(), this->isOpaque(), &bm);
     return SkShader::CreateBitmapShader(bm, tileX, tileY, localMatrix);
 }
@@ skipping 177 matching lines @@
                                                      colorSpace))->unref();
 
     const SkRect rect = SkRect::MakeWH(SkIntToScalar(dstDesc.fWidth),
                                        SkIntToScalar(dstDesc.fHeight));
     ctx->drawContext()->drawRect(dst->asRenderTarget(), GrClip::WideOpen(), paint, SkMatrix::I(),
                                  rect);
     ctx->flushSurfaceWrites(dst);
     return SkNEW_ARGS(SkImage_Gpu, (dstDesc.fWidth, dstDesc.fHeight, kOpaque_SkAlphaType, dst, 0,
                                     budgeted));
 }