There is an unused rowBytes parameter being passed along.

src/gpu/GrSWMaskHelper.cpp

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrSWMaskHelper.h"
 
 #include "GrCaps.h"
@@ skipping 267 matching lines @@
 }
 
 /**
  * Move the result of the software mask generation back to the gpu
  */
 void GrSWMaskHelper::toTexture(GrTexture *texture) {
     GrSurfaceDesc desc;
     desc.fWidth = fPixels.width();
     desc.fHeight = fPixels.height();
     desc.fConfig = texture->config();
-        
+
     // First see if we should compress this texture before uploading.
     switch (fCompressionMode) {
         case kNone_CompressionMode:
             this->sendTextureData(texture, desc, fPixels.addr(), fPixels.rowBytes());
             break;
 
         case kCompress_CompressionMode:
             this->compressTextureData(texture, desc);
             break;
 
@@ skipping 69 matching lines @@
     pipelineBuilder->addCoverageFragmentProcessor(
                          GrSimpleTextureEffect::Create(texture,
                                                        maskMatrix,
                                                        GrTextureParams::kNone_FilterMode,
                                                        kDevice_GrCoordSet))->unref();
 
     SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
                                                                         dstRect, nullptr, &invert));
     target->drawBatch(*pipelineBuilder, batch);
 }