Add more RAW picture formats to the media galleries extension filter.

net/base/mime_sniffer.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Detecting mime types is a tricky business because we need to balance
 // compatibility concerns with security issues.  Here is a survey of how other
 // browsers behave and then a description of how we intend to behave.
 //
 // HTML payload, no Content-Type header:
 // * IE 7: Render as HTML
@@ skipping 222 matching lines @@
   MAGIC_NUMBER("audio/ogg", "OggS")
   MAGIC_MASK("video/mpeg", "\x00\x00\x01\xB0", "\xFF\xFF\xFF\xF0")
   MAGIC_MASK("audio/mpeg", "\xFF\xE0", "\xFF\xE0")
   MAGIC_NUMBER("video/3gpp", "....ftyp3g")
   MAGIC_NUMBER("video/3gpp", "....ftypavcl")
   MAGIC_NUMBER("video/mp4", "....ftyp")
   MAGIC_NUMBER("video/quicktime", "MOVI")
   MAGIC_NUMBER("application/x-shockwave-flash", "CWS")
   MAGIC_NUMBER("application/x-shockwave-flash", "FWS")
   MAGIC_NUMBER("video/x-flv", "FLV")
+
+  // RAW image types.
+  MAGIC_NUMBER("image/x-canon-cr2", "II\x2a\x00\x10\x00\x00\x00CR")
+  MAGIC_NUMBER("image/x-canon-crw", "II\x1a\x00\x00\x00HEAPCCDR")
+  MAGIC_NUMBER("image/x-minolta-mrw", "\x00MRM")
+  MAGIC_NUMBER("image/x-olympus-orf", "MMOR")  // big-endian
+  MAGIC_NUMBER("image/x-olympus-orf", "IIRO")  // little-endian
+  MAGIC_NUMBER("image/x-olympus-orf", "IIRS")  // little-endian
+  MAGIC_NUMBER("image/x-fuji-raf", "FUJIFILMCCD-RAW ")
+  MAGIC_NUMBER("image/x-panasonic-raw",
+               "IIU\x00\x08\x00\x00\x00")  // Panasonic .raw
+  MAGIC_NUMBER("image/x-panasonic-raw",
+               "IIU\x00\x18\x00\x00\x00")  // Panasonic .rw2
+  MAGIC_NUMBER("image/x-phaseone-raw", "MMMMRaw")
+  MAGIC_NUMBER("image/x-x3f", "FOVb")
 };
 
 // Our HTML sniffer differs slightly from Mozilla.  For example, Mozilla will
 // decide that a document that begins "<!DOCTYPE SOAP-ENV:Envelope PUBLIC " is
 // HTML, but we will not.
 
 #define MAGIC_HTML_TAG(tag) \
   MAGIC_STRING("text/html", "<" tag)
 
 static const MagicNumber kSniffableTags[] = {
@@ skipping 690 matching lines @@
   // First check the extra table.
   if (CheckForMagicNumbers(content, size, kExtraMagicNumbers,
                            arraysize(kExtraMagicNumbers), NULL, result))
     return true;
   // Finally check the original table.
   return CheckForMagicNumbers(content, size, kMagicNumbers,
                               arraysize(kMagicNumbers), NULL, result);
 }
 
 }  // namespace net