There is an unused rowBytes parameter being passed along.

src/gpu/GrContext.cpp

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrContext.h"
 #include "GrContextOptions.h"
 #include "GrDrawingManager.h"
@@ skipping 249 matching lines @@
     }
 
     GrGpu::DrawPreference drawPreference = GrGpu::kNoDraw_DrawPreference;
     // Don't prefer to draw for the conversion (and thereby access a texture from the cache) when
     // we've already determined that there isn't a roundtrip preserving conversion processor pair.
     if (applyPremulToSrc && !this->didFailPMUPMConversionTest()) {
         drawPreference = GrGpu::kCallerPrefersDraw_DrawPreference;
     }
 
     GrGpu::WritePixelTempDrawInfo tempDrawInfo;
-    if (!fGpu->getWritePixelsInfo(surface, width, height, rowBytes, srcConfig, &drawPreference,
+    if (!fGpu->getWritePixelsInfo(surface, width, height, srcConfig, &drawPreference,
                                   &tempDrawInfo)) {
         return false;
     }
 
     if (!(kDontFlush_PixelOpsFlag & pixelOpsFlags) && surface->surfacePriv().hasPendingIO()) {
         this->flush();
     }
 
     SkAutoTUnref<GrTexture> tempTexture;
     if (GrGpu::kNoDraw_DrawPreference != drawPreference) {
@@ skipping 371 matching lines @@
     ASSERT_SINGLE_OWNER
     fResourceCache->setLimits(maxTextures, maxTextureBytes);
 }
 
 //////////////////////////////////////////////////////////////////////////////
 
 void GrContext::dumpMemoryStatistics(SkTraceMemoryDump* traceMemoryDump) const {
     ASSERT_SINGLE_OWNER
     fResourceCache->dumpMemoryStatistics(traceMemoryDump);
 }