Some cleanup in GrTextureProvider and GrResourceProvider

tests/TessellatingPathRendererTests.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 "SkPath.h"
 
 #if SK_SUPPORT_GPU
@@ skipping 243 matching lines @@
     GrContext* context = factory->get(static_cast<GrContextFactory::GLContextType>(0));
     if (NULL == context) {
         return;
     }
     GrSurfaceDesc desc;
     desc.fFlags = kRenderTarget_GrSurfaceFlag;
     desc.fWidth = 800;
     desc.fHeight = 800;
     desc.fConfig = kSkia8888_GrPixelConfig;
     desc.fOrigin = kTopLeft_GrSurfaceOrigin;
-    SkAutoTUnref<GrTexture> texture(context->textureProvider()->refScratchTexture(desc,
-        GrTextureProvider::kExact_ScratchTexMatch));
+    SkAutoTUnref<GrTexture> texture(context->textureProvider()->createApproxTexture(desc));
     GrTestTarget tt;
     context->getTestTarget(&tt);
     GrRenderTarget* rt = texture->asRenderTarget();
     GrDrawTarget* dt = tt.target();
     GrResourceProvider* rp = tt.resourceProvider();
 
     test_path(dt, rt, rp, create_path_0());
     test_path(dt, rt, rp, create_path_1());
     test_path(dt, rt, rp, create_path_2());
     test_path(dt, rt, rp, create_path_3());
     test_path(dt, rt, rp, create_path_4());
     test_path(dt, rt, rp, create_path_5());
     test_path(dt, rt, rp, create_path_6());
     test_path(dt, rt, rp, create_path_7());
     test_path(dt, rt, rp, create_path_8());
     test_path(dt, rt, rp, create_path_9());
     test_path(dt, rt, rp, create_path_10());
     test_path(dt, rt, rp, create_path_11());
     test_path(dt, rt, rp, create_path_12());
     test_path(dt, rt, rp, create_path_13());
     test_path(dt, rt, rp, create_path_14());
     test_path(dt, rt, rp, create_path_15());
 }
 #endif