Add SkEncodedInfo to report properties of encoded image data

src/codec/SkJpegDecoderMgr.cpp

Index: src/codec/SkJpegDecoderMgr.cpp
diff --git a/src/codec/SkJpegDecoderMgr.cpp b/src/codec/SkJpegDecoderMgr.cpp
index cc44f3c42117cd1b285ee5651180f47bd2b602df..380b1a620fefd5df143303c3da01bab368fd2a01 100644
--- a/src/codec/SkJpegDecoderMgr.cpp
+++ b/src/codec/SkJpegDecoderMgr.cpp
@@ -34,12 +34,25 @@ SkCodec::Result JpegDecoderMgr::returnFailure(const char caller[], SkCodec::Resu
     return result;
 }
 
-SkColorType JpegDecoderMgr::getColorType() {
+bool JpegDecoderMgr::getEncodedColor(SkEncodedInfo::Color* color) {
     switch (fDInfo.jpeg_color_space) {
         case JCS_GRAYSCALE:
-            return kGray_8_SkColorType;
+            *color = SkEncodedInfo::kGray_Color;
+            return true;
+        case JCS_YCbCr:
+            *color = SkEncodedInfo::kYUV_Color;
+            return true;
+        case JCS_RGB:
+            *color = SkEncodedInfo::kRGB_Color;
+            return true;
+        case JCS_YCCK:
+            *color = SkEncodedInfo::kYCCK_Color;
+            return true;
+        case JCS_CMYK:
+            *color = SkEncodedInfo::kInvertedCMYK_Color;
+            return true;
         default:
-            return kN32_SkColorType;
+            return false;
     }
 }