Add CodecZeroInit test to DMSrcSink

dm/DM.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "CrashHandler.h"
 #include "DMJsonWriter.h"
 #include "DMSrcSink.h"
@@ skipping 214 matching lines @@
     }
 }
 
 static void push_codec_src(Path path, CodecSrc::Mode mode, CodecSrc::DstColorType dstColorType,
         float scale) {
     SkString folder;
     switch (mode) {
         case CodecSrc::kCodec_Mode:
             folder.append("codec");
             break;
+        case CodecSrc::kCodecZeroInit_Mode:
+            folder.append("codec_zero_init");
+            break;
         case CodecSrc::kScanline_Mode:
             folder.append("scanline");
             break;
         case CodecSrc::kStripe_Mode:
             folder.append("stripe");
             break;
         case CodecSrc::kSubset_Mode:
             folder.append("codec_subset");
             break;
     }
@@ skipping 59 matching lines @@
         SkDebugf("Couldn't create codec for %s.", path.c_str());
         return;
     }
 
     // Native Scales
     // TODO (msarett): Implement scaling tests for SkImageDecoder in order to compare with these
     //                 tests.  SkImageDecoder supports downscales by integer factors.
     // SkJpegCodec natively supports scaling to: 0.125, 0.25, 0.375, 0.5, 0.625, 0.75, 0.875
     const float nativeScales[] = { 0.125f, 0.25f, 0.375f, 0.5f, 0.625f, 0.750f, 0.875f, 1.0f };
 
-    const CodecSrc::Mode nativeModes[] = { CodecSrc::kCodec_Mode, CodecSrc::kScanline_Mode,
-            CodecSrc::kStripe_Mode, CodecSrc::kSubset_Mode };
+    const CodecSrc::Mode nativeModes[] = { CodecSrc::kCodec_Mode, CodecSrc::kCodecZeroInit_Mode,
+            CodecSrc::kScanline_Mode, CodecSrc::kStripe_Mode, CodecSrc::kSubset_Mode };
 
     CodecSrc::DstColorType colorTypes[3];
     uint32_t numColorTypes;
     switch (codec->getInfo().colorType()) {
         case kGray_8_SkColorType:
             // FIXME: Is this a long term solution for testing wbmps decodes to kIndex8?
             // Further discussion on this topic is at https://bug.skia.org/3683 .
             // This causes us to try to convert grayscale jpegs to kIndex8.  We currently
             // fail non-fatally in this case.
             colorTypes[0] = CodecSrc::kGetFromCanvas_DstColorType;
@@ skipping 914 matching lines @@
                                                            Reporter* reporter,
                                                            GrContextFactory* factory);
 } // namespace skiatest
 
 #if !defined(SK_BUILD_FOR_IOS)
 int main(int argc, char** argv) {
     SkCommandLineFlags::Parse(argc, argv);
     return dm_main();
 }
 #endif