Convert GrClip to an abstract base class

src/gpu/GrTextureParamsAdjuster.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrTextureParamsAdjuster.h"
 
 #include "GrCaps.h"
@@ skipping 101 matching lines @@
     } else {
         localRect = SkRect::MakeWH(1.f, 1.f);
     }
 
     sk_sp<GrDrawContext> drawContext(context->drawContext(sk_ref_sp(copy->asRenderTarget())));
     if (!drawContext) {
         return nullptr;
     }
 
     SkRect dstRect = SkRect::MakeWH(SkIntToScalar(rtDesc.fWidth), SkIntToScalar(rtDesc.fHeight));
-    drawContext->fillRectToRect(GrClip::WideOpen(), paint, SkMatrix::I(), dstRect, localRect);
+    drawContext->fillRectToRect(GrNoClip(), paint, SkMatrix::I(), dstRect, localRect);
     return copy.release();
 }
 
 GrTextureAdjuster::GrTextureAdjuster(GrTexture* original,
                                      const SkIRect& contentArea,
                                      bool isAlphaOnly)
     : INHERITED(contentArea.width(), contentArea.height(), isAlphaOnly)
     , fOriginal(original) {
     SkASSERT(SkIRect::MakeWH(original->width(), original->height()).contains(contentArea));
     if (contentArea.fLeft > 0 || contentArea.fTop > 0 ||
@@ skipping 374 matching lines @@
 }
 
 GrTexture* GrTextureMaker::generateTextureForParams(const CopyParams& copyParams,
                                                     bool willBeMipped) {
     SkAutoTUnref<GrTexture> original(this->refOriginalTexture(willBeMipped));
     if (!original) {
         return nullptr;
     }
     return copy_on_gpu(original, nullptr, copyParams);
 }