Add support for Animated PNG

third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.h

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "platform/image-decoders/ImageDecoder.h"
 #include "wtf/Vector.h"
 #include <memory>
 
 class SkBitmap;
 
 namespace blink {
 class ImageDecoder;
 class SharedBuffer;
 
 const char decodersTestingDir[] = "Source/platform/image-decoders/testing";
 
 using DecoderCreator = std::unique_ptr<ImageDecoder> (*)();
 using DecoderCreatorWithAlpha =
     std::unique_ptr<ImageDecoder> (*)(ImageDecoder::AlphaOption);
 
 PassRefPtr<SharedBuffer> readFile(const char* fileName);
 PassRefPtr<SharedBuffer> readFile(const char* dir, const char* fileName);
 unsigned hashBitmap(const SkBitmap&);
 void createDecodingBaseline(DecoderCreator,
                             SharedBuffer*,
                             Vector<unsigned>* baselineHashes);
 
 void testByteByByteDecode(DecoderCreator createDecoder,
+                          SharedBuffer* data,
+                          size_t expectedFrameCount,
+                          int expectedRepetitionCount);
+void testByteByByteDecode(DecoderCreator createDecoder,
                           const char* file,
                           size_t expectedFrameCount,
                           int expectedRepetitionCount);
 void testByteByByteDecode(DecoderCreator createDecoder,
                           const char* dir,
                           const char* file,
                           size_t expectedFrameCount,
                           int expectedRepetitionCount);
 
 void testMergeBuffer(DecoderCreator createDecoder, const char* file);
@@ skipping 59 matching lines @@
                                                        const char* dir,
                                                        const char* file);
 void testResumePartialDecodeAfterClearFrameBufferCache(DecoderCreator,
                                                        const char* file);
 
 // Verifies that result of alpha blending is similar for AlphaPremultiplied and
 // AlphaNotPremultiplied cases.
 void testAlphaBlending(DecoderCreatorWithAlpha, const char*);
 
 }  // namespace blink