Remove unnecessary check

dm/DMSrcSink.cpp

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "DMSrcSink.h"
 #include "SkAndroidCodec.h"
 #include "SkCodec.h"
@@ skipping 305 matching lines @@
 static bool get_decode_info(SkImageInfo* decodeInfo, SkColorType canvasColorType,
                             CodecSrc::DstColorType dstColorType, SkAlphaType dstAlphaType) {
     switch (dstColorType) {
         case CodecSrc::kIndex8_Always_DstColorType:
             if (kRGB_565_SkColorType == canvasColorType) {
                 return false;
             }
             *decodeInfo = decodeInfo->makeColorType(kIndex_8_SkColorType);
             break;
         case CodecSrc::kGrayscale_Always_DstColorType:
-            if (kRGB_565_SkColorType == canvasColorType ||
-                    kOpaque_SkAlphaType != decodeInfo->alphaType()) {
+            if (kRGB_565_SkColorType == canvasColorType) {
                 return false;
             }
             *decodeInfo = decodeInfo->makeColorType(kGray_8_SkColorType);
             break;
         case CodecSrc::kNonNative8888_Always_DstColorType:
             if (kRGB_565_SkColorType == canvasColorType) {
                 return false;
             }
 #ifdef SK_PMCOLOR_IS_RGBA
             *decodeInfo = decodeInfo->makeColorType(kBGRA_8888_SkColorType);
@@ skipping 1119 matching lines @@
             skr.visit(i, drawsAsSingletonPictures);
         }
         sk_sp<SkPicture> macroPic(macroRec.finishRecordingAsPicture());
 
         canvas->drawPicture(macroPic);
         return check_against_reference(bitmap, src, fSink);
     });
 }
 
 }  // namespace DM