Reimplement deserialization of SkImageFilter's uniqueID.

src/effects/SkOffsetImageFilter.cpp

Index: src/effects/SkOffsetImageFilter.cpp
diff --git a/src/effects/SkOffsetImageFilter.cpp b/src/effects/SkOffsetImageFilter.cpp
index fcf09cc4eb54374228916526beb7c0fba6788995..90528c62d80eb1312f676d4fa02718969c17986b 100644
--- a/src/effects/SkOffsetImageFilter.cpp
+++ b/src/effects/SkOffsetImageFilter.cpp
@@ -95,7 +95,7 @@ SkFlattenable* SkOffsetImageFilter::CreateProc(SkReadBuffer& buffer) {
     SK_IMAGEFILTER_UNFLATTEN_COMMON(common, 1);
     SkPoint offset;
     buffer.readPoint(&offset);
-    return Create(offset.x(), offset.y(), common.getInput(0), &common.cropRect());
+    return Create(offset.x(), offset.y(), common.getInput(0), &common.cropRect(), common.uniqueID());
 }
 
 void SkOffsetImageFilter::flatten(SkWriteBuffer& buffer) const {
@@ -104,8 +104,8 @@ void SkOffsetImageFilter::flatten(SkWriteBuffer& buffer) const {
 }
 
 SkOffsetImageFilter::SkOffsetImageFilter(SkScalar dx, SkScalar dy, SkImageFilter* input,
-                                         const CropRect* cropRect)
-  : INHERITED(1, &input, cropRect) {
+                                         const CropRect* cropRect, uint32_t uniqueID)
+  : INHERITED(1, &input, cropRect, uniqueID) {
     fOffset.set(dx, dy);
 }