Rename GPU functions on SkBlurMaskFilter and pass ctm.

R=robertphillips@google.com

Author: bsalomon@google.com

Review URL: https://codereview.chromium.org/109823012

git-svn-id: http://skia.googlecode.com/svn/trunk@12978 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 25aacca..86c8ba9 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -939,7 +939,9 @@
                                 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);