Dedup SkPaths by gen-ID when going to .skp

src/core/SkPictureData.cpp

Index: src/core/SkPictureData.cpp
diff --git a/src/core/SkPictureData.cpp b/src/core/SkPictureData.cpp
index 9ed98cf4ff9e0ccc1f33c9760a1feab57312cda1..df636c02eb9594cac4e6caa26cbb4101214b4002 100644
--- a/src/core/SkPictureData.cpp
+++ b/src/core/SkPictureData.cpp
@@ -46,7 +46,11 @@ SkPictureData::SkPictureData(const SkPictureRecord& record,
 
     fBitmaps = record.fBitmaps;
     fPaints  = record.fPaints;
-    fPaths   = record.fPaths;
+
+    fPaths.reset(record.fPaths.count() + 1);  // 0 is reserved.

[mtklein, 2015/10/29 14:15:29]

Oops, note to self, remove this.  0's not reserved, I don't think.

+    record.fPaths.foreach([this](const SkPath& path, int n) {
+        fPaths[n] = path;
+    });
 
     this->initForPlayback();