Fix bug in deferred decoding where we don't properly pass the unpremul option to the codec.

src/images/SkImageRef.cpp

Index: src/images/SkImageRef.cpp
diff --git a/src/images/SkImageRef.cpp b/src/images/SkImageRef.cpp
index f3cc9e55901395f9b9fafe5a2f1323de4775e532..458aa2aa5abeec269ff95bd77240455038ab00d8 100644
--- a/src/images/SkImageRef.cpp
+++ b/src/images/SkImageRef.cpp
@@ -121,13 +121,12 @@ bool SkImageRef::prepareBitmap(SkImageDecoder::Mode mode) {
 
         codec->setSampleSize(fSampleSize);
         codec->setDitherImage(fDoDither);
+        codec->setRequireUnpremultipliedColors(this->info().fAlphaType == kUnpremul_SkAlphaType);
         if (this->onDecode(codec, fStream, &fBitmap, fBitmap.config(), mode)) {
             if (kOpaque_SkAlphaType == fBitmap.alphaType()) {
                 this->changeAlphaType(kOpaque_SkAlphaType);
             }
-            SkASSERT(this->info().fColorType == fBitmap.colorType());
-            SkASSERT(this->info().fWidth == fBitmap.width());
-            SkASSERT(this->info().fHeight == fBitmap.height());
+            SkASSERT(this->info() == fBitmap.info());
             return true;
         }
     }