Revert of Cancel image loads if decoding failed.

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

Index: third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
diff --git a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
index 0a73a82315b20919cba52da038188b0b239400be..ccb3e4002a312d135e6a531401089a2cd9179c1c 100644
--- a/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
+++ b/third_party/WebKit/Source/platform/image-decoders/ImageDecoder.h
@@ -94,21 +94,6 @@
         GammaAndColorProfileIgnored
     };
 
-    enum class SniffResult {
-        JPEG,
-        PNG,
-        GIF,
-        WEBP,
-        ICO,
-        BMP,
-        InsufficientData,
-        Invalid
-    };
-
-    static SniffResult determineImageType(const char* data, size_t length);
-    static SniffResult determineImageType(const SharedBuffer&);
-    static SniffResult determineImageType(const SegmentReader&);
-
     ImageDecoder(AlphaOption alphaOption, GammaAndColorProfileOption colorOptions, size_t maxDecodedBytes)
         : m_premultiplyAlpha(alphaOption == AlphaPremultiplied)
         , m_ignoreGammaAndColorProfile(colorOptions == GammaAndColorProfileIgnored)
@@ -123,7 +108,9 @@
     // we can't sniff a supported type from the provided data (possibly
     // because there isn't enough data yet).
     // Sets m_maxDecodedBytes to Platform::maxImageDecodedBytes().
-    static std::unique_ptr<ImageDecoder> create(SniffResult, AlphaOption, GammaAndColorProfileOption);
+    static std::unique_ptr<ImageDecoder> create(const char* data, size_t length, AlphaOption, GammaAndColorProfileOption);
+    static std::unique_ptr<ImageDecoder> create(const SharedBuffer&, AlphaOption, GammaAndColorProfileOption);
+    static std::unique_ptr<ImageDecoder> create(const SegmentReader&, AlphaOption, GammaAndColorProfileOption);
 
     virtual String filenameExtension() const = 0;