Refactor drawContext/RenderTarget creation

tests/ClipBoundsTest.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 "Test.h"
 // This is a GR test
 #if SK_SUPPORT_GPU
 #include "GrClipMaskManager.h"
 #include "GrContext.h"
 
 // Ensure that the 'getConservativeBounds' calls are returning bounds clamped
 // to the render target
 DEF_GPUTEST_FOR_RENDERING_CONTEXTS(GrClipBounds, reporter, ctxInfo) {
     static const int kXSize = 100;
     static const int kYSize = 100;
 
-    GrSurfaceDesc desc;
-    desc.fFlags     = kRenderTarget_GrSurfaceFlag;
-    desc.fConfig    = kAlpha_8_GrPixelConfig;
-    desc.fWidth     = kXSize;
-    desc.fHeight    = kYSize;
-
-    SkAutoTUnref<GrTexture> texture(
-        ctxInfo.fGrContext->textureProvider()->createTexture(desc, SkBudgeted::kYes, nullptr, 0));
-    if (!texture) {
-        return;
-    }
-
-    SkIRect intScreen = SkIRect::MakeWH(kXSize, kYSize);
-    SkRect screen = SkRect::Make(intScreen);
+    const SkIRect intScreen = SkIRect::MakeWH(kXSize, kYSize);
+    const SkRect screen = SkRect::Make(intScreen);
 
     SkRect clipRect(screen);
     clipRect.outset(10, 10);
 
     // create a clip stack that will (trivially) reduce to a single rect that
     // is larger than the screen
     SkClipStack stack;
     stack.clipDevRect(clipRect, SkRegion::kReplace_Op, false);
 
     bool isIntersectionOfRects = true;
     SkRect devStackBounds;
 
     stack.getConservativeBounds(0, 0, kXSize, kYSize,
                                 &devStackBounds,
                                 &isIntersectionOfRects);
 
     // make sure that the SkClipStack is behaving itself
     REPORTER_ASSERT(reporter, screen == devStackBounds);
     REPORTER_ASSERT(reporter, isIntersectionOfRects);
 
     // wrap the SkClipStack in a GrClip
     GrClip clipData;
     clipData.setClipStack(&stack);
 
     SkIRect devGrClipBound;
-    clipData.getConservativeBounds(texture->width(), texture->height(),
+    clipData.getConservativeBounds(kXSize, kYSize,
                                    &devGrClipBound,
                                    &isIntersectionOfRects);
 
     // make sure that GrClip is behaving itself
     REPORTER_ASSERT(reporter, intScreen == devGrClipBound);
     REPORTER_ASSERT(reporter, isIntersectionOfRects);
 }
 
 #endif