add backdrop option to SaveLayerRec

include/core/SkCanvas.h

Index: include/core/SkCanvas.h
diff --git a/include/core/SkCanvas.h b/include/core/SkCanvas.h
index 14f0aa5250920aded9f78b9a541e2b2857cd454b..b27d5973da50efd6421c486ff3549f476dfc669b 100644
--- a/include/core/SkCanvas.h
+++ b/include/core/SkCanvas.h
@@ -343,6 +343,8 @@ public:
      */
     int saveLayerPreserveLCDTextRequests(const SkRect* bounds, const SkPaint* paint);
 

[robertphillips, 2015/12/15 13:28:38]

dox ?

+    int saveLayerWithPickup(const SkRect* bounds, const SkPaint* paint, SkImageFilter*);
+
     /** DEPRECATED - use saveLayer(const SkRect*, const SkPaint*) instead.
 
         This behaves the same as saveLayer(const SkRect*, const SkPaint*),
@@ -1418,7 +1420,8 @@ private:
                                 const SkRect& dst, const SkPaint* paint,
                                 SrcRectConstraint);
     void internalDrawPaint(const SkPaint& paint);
-    void internalSaveLayer(const SkRect* bounds, const SkPaint*, SaveFlags, SaveLayerStrategy);
+    void internalSaveLayer(const SkRect* bounds, const SkPaint*, SaveFlags, SaveLayerStrategy,
+                           SkImageFilter*);
     void internalDrawDevice(SkBaseDevice*, int x, int y, const SkPaint*, bool isBitmapDevice);
 
     // shared by save() and saveLayer()