Make SkPicture/SkImageGenerator default to SkCodec

src/core/SkPicture.cpp

Index: src/core/SkPicture.cpp
diff --git a/src/core/SkPicture.cpp b/src/core/SkPicture.cpp
index 8247336d49e96d3d7698dbb8bdaf61a1a9498b41..04f2f93ba73ea3270e43aa4e77c4502f9538081a 100644
--- a/src/core/SkPicture.cpp
+++ b/src/core/SkPicture.cpp
@@ -6,6 +6,7 @@
  */
 
 #include "SkAtomics.h"
+#include "SkImageGenerator.h"
 #include "SkMessageBus.h"
 #include "SkPicture.h"
 #include "SkPictureData.h"
@@ -138,6 +139,16 @@ SkPicture* SkPicture::Forwardport(const SkPictInfo& info, const SkPictureData* d
     return r.endRecording();
 }
 
+static bool default_install(const void* src, size_t length, SkBitmap* dst) {
+    SkAutoTUnref<SkData> encoded(SkData::NewWithCopy(src, length));
+    return encoded && SkDEPRECATED_InstallDiscardablePixelRef(
+            SkImageGenerator::NewFromEncoded(encoded), dst);
+}
+
+SkPicture* SkPicture::CreateFromStream(SkStream* stream) {
+    return CreateFromStream(stream, &default_install, nullptr);
+}
+
 SkPicture* SkPicture::CreateFromStream(SkStream* stream, InstallPixelRefProc proc) {
     return CreateFromStream(stream, proc, nullptr);
 }