Revert of Switch SkBlurImageFilter over to new onFilterImage interface

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
diff --git a/src/core/SkDevice.cpp b/src/core/SkDevice.cpp
index 0c0dfa997c85bbf7621e86f8f8ddd9d9aa79a25d..fb4b48fdbd4376614c937bb2e8246aeda9510cff 100644
--- a/src/core/SkDevice.cpp
+++ b/src/core/SkDevice.cpp
@@ -403,13 +403,10 @@
 
 //////////////////////////////////////////////////////////////////////////////////////////
 
-void SkBaseDevice::drawBitmapAsSpriteWithImageFilter(const SkDraw& draw, const SkBitmap& bitmap,
-                                                     int x, int y,
-                                                     const SkPaint& paint) {
+void SkBaseDevice::drawBitmapAsSprite(const SkDraw& draw, const SkBitmap& bitmap, int x, int y,
+                                      const SkPaint& paint) {
     SkImageFilter* filter = paint.getImageFilter();
-    SkASSERT(filter);
-
-    if (!this->canHandleImageFilter(filter)) {
+    if (filter && !this->canHandleImageFilter(filter)) {
         SkImageFilter::DeviceProxy proxy(this);
         SkIPoint offset = SkIPoint::Make(0, 0);
         SkMatrix matrix = *draw.fMatrix;