Reland again "Decode GIF image frames on demand".

Source/WebKit/chromium/WebKit.gypi

 #
 # Copyright (C) 2010 Google Inc. All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
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 #         * Redistributions of source code must retain the above copyright
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@@ skipping 28 matching lines @@
             'tests/DeferredImageDecoderTest.cpp',
             'tests/DragImageTest.cpp',
             'tests/DrawingBufferTest.cpp',
             'tests/FakeWebPlugin.cpp',
             'tests/FakeWebPlugin.h',
             'tests/FakeWebGraphicsContext3D.h',
             'tests/FilterOperationsTest.cpp',
             'tests/FrameLoaderClientImplTest.cpp',
             'tests/FrameTestHelpers.cpp',
             'tests/FrameTestHelpers.h',
-            'tests/GIFImageDecoderTest.cpp',
             'tests/GraphicsContextTest.cpp',
             'tests/GraphicsLayerTest.cpp',
             'tests/IDBAbortOnCorruptTest.cpp',
             'tests/IDBBackingStoreTest.cpp',
             'tests/IDBBindingUtilitiesTest.cpp',
             'tests/IDBCleanupOnIOErrorTest.cpp',
             'tests/IDBDatabaseBackendTest.cpp',
             'tests/IDBFakeBackingStore.h',
             'tests/IDBKeyPathTest.cpp',
             'tests/IDBLevelDBCodingTest.cpp',
@@ skipping 77 matching lines @@
             }],
         ],
     },
 }
 
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 # vim: set expandtab tabstop=2 shiftwidth=2: