Fix sky include guards to match Chromium style

sky/engine/platform/image-decoders/ico/ICOImageDecoder.h

 /*
  * Copyright (c) 2008, 2009, 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
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 10 matching lines @@
  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  * OWNER 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 ICOImageDecoder_h
-#define ICOImageDecoder_h
+#ifndef SKY_ENGINE_PLATFORM_IMAGE-DECODERS_ICO_ICOIMAGEDECODER_H_
+#define SKY_ENGINE_PLATFORM_IMAGE-DECODERS_ICO_ICOIMAGEDECODER_H_
 
 #include "platform/image-decoders/bmp/BMPImageReader.h"
 
 namespace blink {
 
 class PNGImageDecoder;
 
 // This class decodes the ICO and CUR image formats.
 class PLATFORM_EXPORT ICOImageDecoder : public ImageDecoder {
 public:
@@ skipping 103 matching lines @@
     typedef Vector<OwnPtr<PNGImageDecoder> > PNGDecoders;
     PNGDecoders m_pngDecoders;
 
     // Valid only while a BMPImageReader is decoding, this holds the size
     // for the particular entry being decoded.
     IntSize m_frameSize;
 };
 
 } // namespace blink
 
-#endif
+#endif  // SKY_ENGINE_PLATFORM_IMAGE-DECODERS_ICO_ICOIMAGEDECODER_H_