Cleanup: Fix content header include guards.

content/public/child/image_decoder_utils.h

Index: content/public/child/image_decoder_utils.h
diff --git a/content/public/child/image_decoder_utils.h b/content/public/child/image_decoder_utils.h
index b2e35628ce91320752c564fe1ebbed4a357b3e5b..56f2027e3b11791b0da781ce29a72c0d842a8178 100644
--- a/content/public/child/image_decoder_utils.h
+++ b/content/public/child/image_decoder_utils.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_PUBLIC_UTILITY_IMAGE_DECODER_UTILS_H_
-#define CONTENT_PUBLIC_UTILITY_IMAGE_DECODER_UTILS_H_
+#ifndef CONTENT_PUBLIC_CHILD_IMAGE_DECODER_UTILS_H_
+#define CONTENT_PUBLIC_CHILD_IMAGE_DECODER_UTILS_H_
 
 #include "base/basictypes.h"
 #include "content/common/content_export.h"
@@ -21,4 +21,4 @@ CONTENT_EXPORT SkBitmap DecodeImage(const unsigned char* data,
                                     size_t size);
 }  // namespace content
 
-#endif  // CONTENT_PUBLIC_UTILITY_IMAGE_DECODER_UTILS_H_
+#endif  // CONTENT_PUBLIC_CHILD_IMAGE_DECODER_UTILS_H_