Fix ImageDecoder::frameIsCompleteAtIndex - fully received instead of decoded.

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

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.cpp
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.cpp b/third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.cpp
index 3c51d4d721e9ce215e416a24110b7697c9c91a37..01d484322822cb2ad66ca4e6f5d44af4264df82d 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.cpp
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoderTestHelpers.cpp
@@ -86,7 +86,15 @@ void testByteByByteDecode(DecoderCreator createDecoder, const char* file, size_t
         if (!decoder->isSizeAvailable())
             continue;
 
+        bool frameIsFullyReceived = decoder->frameIsFullyReceivedAtIndex(frameCount - 1);
         ImageFrame* frame = decoder->frameBufferAtIndex(frameCount - 1);
+
+        // FIXME: libwebp parsing of crbug.364830.webp doesn't mark the frame
+        // as complete two bytes before the end of the file. However, decoding
+        // it to the same point produces completely decoded frame.
+        if (decoder->filenameExtension() != "webp" || frameIsFullyReceived)
+            EXPECT_EQ(frameIsFullyReceived, decoder->frameIsCompleteAtIndex(frameCount - 1) || decoder->failed());
+
         if (frame && frame->getStatus() == ImageFrame::FrameComplete && framesDecoded < frameCount)
             ++framesDecoded;
     }