There is an unused rowBytes parameter being passed along.

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 187a3ca37a7a1e416f83c0846c421c0ec49f3fe6..9a969743cf02b6936fca53738e9a5118d68330ef 100644
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -267,7 +267,7 @@ bool GrContext::writeSurfacePixels(GrSurface* surface,
     }
 
     GrGpu::WritePixelTempDrawInfo tempDrawInfo;
-    if (!fGpu->getWritePixelsInfo(surface, width, height, rowBytes, srcConfig, &drawPreference,
+    if (!fGpu->getWritePixelsInfo(surface, width, height, srcConfig, &drawPreference,
                                   &tempDrawInfo)) {
         return false;
     }