Force embedding full font when serializing pictures.

src/core/SkPictureData.cpp

Index: src/core/SkPictureData.cpp
diff --git a/src/core/SkPictureData.cpp b/src/core/SkPictureData.cpp
index 2b2265403f0e6ed038448cb7d9422d032012f124..17566cbf258edfe1448548839f5b168972d98ad2 100644
--- a/src/core/SkPictureData.cpp
+++ b/src/core/SkPictureData.cpp
@@ -180,7 +180,12 @@ void SkPictureData::WriteTypefaces(SkWStream* stream, const SkRefCntSet& rec) {
     rec.copyToArray((SkRefCnt**)array);
 
     for (int i = 0; i < count; i++) {
+#ifdef SK_BUILD_FOR_UNIX
+        array[i]->serializeForcingEmbedding(stream);
+#else
+        // FIXME: Macs and Windows don't draw pixel-perfect if we embed fonts in the SKP.
         array[i]->serialize(stream);
+#endif
     }
 }