Fix SkTileImageFilter when srcRect is a superset of bitmap bounds.

src/core/SkImageFilter.cpp

Index: src/core/SkImageFilter.cpp
diff --git a/src/core/SkImageFilter.cpp b/src/core/SkImageFilter.cpp
index 7518501aa5e21805ca4d5cfece09c97cda78699b..155b2dc6103383be2d7a618abf42367f397e061f 100644
--- a/src/core/SkImageFilter.cpp
+++ b/src/core/SkImageFilter.cpp
@@ -676,9 +676,10 @@ void SkImageFilter::PurgeCache() {
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////
 
-SkBaseDevice* SkImageFilter::DeviceProxy::createDevice(int w, int h) {
+SkBaseDevice* SkImageFilter::DeviceProxy::createDevice(int w, int h, TileUsage usage) {
     SkBaseDevice::CreateInfo cinfo(SkImageInfo::MakeN32Premul(w, h),
-                                   SkBaseDevice::kNever_TileUsage,
+                                   kPossible_TileUsage == usage ? SkBaseDevice::kPossible_TileUsage
+                                                                : SkBaseDevice::kNever_TileUsage,
                                    kUnknown_SkPixelGeometry,
                                    false,   /* preserveLCDText */
                                    true /*forImageFilter*/);