Pass ctm when performing image filtering in GPU backend.

src/gpu/SkGpuDevice.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 "SkGpuDevice.h"
 
 #include "effects/GrBicubicEffect.h"
@@ skipping 921 matching lines @@
                 // nothing to draw
                 return;
             }
 
             GrAutoScratchTexture mask;
 
             if (create_mask_GPU(fContext, maskRect, *devPathPtr, stroke,
                                 grPaint.isAntiAlias(), &mask)) {
                 GrTexture* filtered;
 
-                if (paint.getMaskFilter()->filterMaskGPU(mask.texture(), maskRect, &filtered, true)) {
+                if (paint.getMaskFilter()->filterMaskGPU(mask.texture(),
+                                                         fContext->getMatrix(), maskRect,
+                                                         &filtered, true)) {
                     // filterMaskGPU gives us ownership of a ref to the result
                     SkAutoTUnref<GrTexture> atu(filtered);
 
                     // If the scratch texture that we used as the filter src also holds the filter
                     // result then we must detach so that this texture isn't recycled for a later
                     // draw.
                     if (filtered == mask.texture()) {
                         mask.detach();
                         filtered->unref(); // detach transfers GrAutoScratchTexture's ref to us.
                     }
@@ skipping 966 matching lines @@
                          GrTexture* texture,
                          bool needClear)
     : SkBitmapDevice(make_bitmap(context, texture->asRenderTarget())) {
 
     SkASSERT(texture && texture->asRenderTarget());
     // This constructor is called from onCreateCompatibleDevice. It has locked the RT in the texture
     // cache. We pass true for the third argument so that it will get unlocked.
     this->initFromRenderTarget(context, texture->asRenderTarget(), true);
     fNeedClear = needClear;
 }