Add SkEncodedInfo to report properties of encoded image data

src/codec/SkJpegDecoderMgr.h

Index: src/codec/SkJpegDecoderMgr.h
diff --git a/src/codec/SkJpegDecoderMgr.h b/src/codec/SkJpegDecoderMgr.h
index 7d34b67a0c0ab31d1ccaae32e55e728b848ef8f8..34734e12df562ae18800a767d1737825f9a5e89b 100644
--- a/src/codec/SkJpegDecoderMgr.h
+++ b/src/codec/SkJpegDecoderMgr.h
@@ -45,9 +45,13 @@ public:
     void  init();
 
     /*
-     * Recommend a color type based on the encoded format
+     * Returns true on success and false on failure.
+     *
+     * @param color Output parameter is set to the SkEncodedInfo::Color that matches
+     *              the jpeg's encoded color type
+     *
      */
-    SkColorType getColorType();
+    bool getEncodedColor(SkEncodedInfo::Color* color);
 
     /*
      * Free memory used by the decode manager