Allow vulkan to upload data to testing textures with optimal layouts

gm/imagefromyuvtextures.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.
  */
 
 // This test only works with the GPU backend.
 
 #include "gm.h"
@@ skipping 13 matching lines @@
     ImageFromYUVTextures() {
         this->setBGColor(0xFFFFFFFF);
     }
 
 protected:
     SkString onShortName() override {
         return SkString("image_from_yuv_textures");
     }
 
     SkISize onISize() override {
-        return SkISize::Make(50, 135);
+        return SkISize::Make(50, 175);
     }
 
     void onOnceBeforeDraw() override {
         // We create an RGB bitmap and then extract YUV bmps where the U and V bitmaps are
         // subsampled by 2 in both dimensions.
         SkPaint paint;
         static const SkColor kColors[] =
             { SK_ColorBLUE, SK_ColorYELLOW, SK_ColorGREEN, SK_ColorWHITE };
         paint.setShader(SkGradientShader::MakeRadial(SkPoint::Make(0,0), kBmpSize / 2.f, kColors,
                                                      nullptr, SK_ARRAY_COUNT(kColors),
@@ skipping 118 matching lines @@
 
     static const int kBmpSize = 32;
 
     typedef GM INHERITED;
 };
 
 DEF_GM(return new ImageFromYUVTextures;)
 }
 
 #endif