diff -r 000000000000 -r 6474c204b198 image/src/ICOFileHeaders.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/image/src/ICOFileHeaders.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,46 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+#ifndef MOZILLA_IMAGELIB_ICOHEADERS_H_
+#define MOZILLA_IMAGELIB_ICOHEADERS_H_
+
+namespace mozilla {
+  namespace image {
+
+    #define ICONFILEHEADERSIZE 6
+    #define ICODIRENTRYSIZE 16
+    #define PNGSIGNATURESIZE 8
+    #define BMPFILEHEADERSIZE 14
+
+    struct IconFileHeader
+    {
+      uint16_t   mReserved;
+      uint16_t   mType;
+      uint16_t   mCount;
+    };
+
+    struct IconDirEntry
+    {
+      uint8_t   mWidth;
+      uint8_t   mHeight;
+      uint8_t   mColorCount;
+      uint8_t   mReserved;
+      union {
+        uint16_t mPlanes;   // ICO
+        uint16_t mXHotspot; // CUR
+      };
+      union {
+        uint16_t mBitCount; // ICO
+        uint16_t mYHotspot; // CUR
+      };
+      uint32_t  mBytesInRes;
+      uint32_t  mImageOffset;
+    };
+
+
+  } // namespace image
+} // namespace mozilla
+
+#endif