Add a CefGetMimeType function for retrieving the mime type of a file extension (issue #1098).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1577 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef/common/url_impl.cc

@@ -4,6 +4,7 @@
 
 #include <sstream>
 #include "include/cef_url.h"
+#include "net/base/mime_util.h"
 #include "url/gurl.h"
 
 bool CefParseURL(const CefString& url,
@@ -66,3 +67,9 @@ bool CefCreateURL(const CefURLParts& parts,
 
   return false;
 }
+
+CefString CefGetMimeType(const CefString& extension) {
+  std::string mime_type;
+  net::GetMimeTypeFromExtension(extension, &mime_type);
+  return mime_type;
+}