add roundOut that returns its result

src/effects/SkGpuBlurUtils.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkGpuBlurUtils.h"
 
 #include "SkRect.h"
@@ skipping 208 matching lines @@
             paint.addColorTextureProcessor(srcTexture, matrix, params);
         }
         scale_rect(&dstRect, i < scaleFactorX ? 0.5f : 1.0f,
                              i < scaleFactorY ? 0.5f : 1.0f);
         context->drawRectToRect(paint, dstRect, srcRect);
         srcRect = dstRect;
         srcTexture = dstTexture;
         SkTSwap(dstTexture, tempTexture);
     }
 
-    SkIRect srcIRect;
-    srcRect.roundOut(&srcIRect);
+    const SkIRect srcIRect = srcRect.roundOut();
 
     // For really small blurs(Certainly no wider than 5x5 on desktop gpus) it is faster to just
     // launch a single non separable kernel vs two launches
     if (sigmaX > 0.0f && sigmaY > 0 &&
             (2 * radiusX + 1) * (2 * radiusY + 1) <= MAX_KERNEL_SIZE) {
         // We shouldn't be scaling because this is a small size blur
         SkASSERT((scaleFactorX == scaleFactorY) == 1);
         context->setRenderTarget(dstTexture->asRenderTarget());
         SkRect dstRect = SkRect::MakeWH(srcRect.width(), srcRect.height());
         convolve_gaussian_2d(context, srcRect, dstRect, srcTexture,
@@ skipping 62 matching lines @@
         context->drawRectToRect(paint, dstRect, srcRect);
         srcRect = dstRect;
         srcTexture = dstTexture;
         SkTSwap(dstTexture, tempTexture);
     }
     return SkRef(srcTexture);
 }
 #endif
 
 }