Moving GraphicsContext and dependencies from core to platform.

Source/core/platform/image-decoders/png/PNGImageDecoder.h

Index: Source/core/platform/image-decoders/png/PNGImageDecoder.h
diff --git a/Source/core/platform/image-decoders/png/PNGImageDecoder.h b/Source/core/platform/image-decoders/png/PNGImageDecoder.h
deleted file mode 100644
index ca09b6d2a442119d4fb81e47451b271cd57ff1b4..0000000000000000000000000000000000000000
--- a/Source/core/platform/image-decoders/png/PNGImageDecoder.h
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2006 Apple Computer, Inc.  All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
- * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
- * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
- * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
- * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
- * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#ifndef PNGImageDecoder_h
-#define PNGImageDecoder_h
-
-#include "core/platform/image-decoders/ImageDecoder.h"
-#include "wtf/OwnPtr.h"
-
-namespace WebCore {
-
-    class PNGImageReader;
-
-    // This class decodes the PNG image format.
-    class PNGImageDecoder : public ImageDecoder {
-    public:
-        PNGImageDecoder(ImageSource::AlphaOption, ImageSource::GammaAndColorProfileOption, size_t maxDecodedBytes);
-        virtual ~PNGImageDecoder();
-
-        // ImageDecoder
-        virtual String filenameExtension() const { return "png"; }
-        virtual bool isSizeAvailable();
-        virtual ImageFrame* frameBufferAtIndex(size_t);
-        // CAUTION: setFailed() deletes |m_reader|.  Be careful to avoid
-        // accessing deleted memory, especially when calling this from inside
-        // PNGImageReader!
-        virtual bool setFailed();
-
-        // Callbacks from libpng
-        void headerAvailable();
-        void rowAvailable(unsigned char* rowBuffer, unsigned rowIndex, int interlacePass);
-        void pngComplete();
-
-        bool isComplete() const
-        {
-            return !m_frameBufferCache.isEmpty() && (m_frameBufferCache.first().status() == ImageFrame::FrameComplete);
-        }
-
-    private:
-        // Decodes the image.  If |onlySize| is true, stops decoding after
-        // calculating the image size.  If decoding fails but there is no more
-        // data coming, sets the "decode failure" flag.
-        void decode(bool onlySize);
-
-        OwnPtr<PNGImageReader> m_reader;
-        bool m_doNothingOnFailure;
-    };
-
-} // namespace WebCore
-
-#endif