Linux: import new xdg-settings to improve the default browser checking.

BUG=20413
TEST=none

Review URL: http://codereview.chromium.org/194047

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@25676 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -113,7 +113,7 @@ deps_os = {
   "unix": {
     # Linux, really.
     "src/third_party/xdg-utils":
-      "/trunk/deps/third_party/xdg-utils@22207",
+      "/trunk/deps/third_party/xdg-utils@25672",
     "src/third_party/ffmpeg/binaries/chromium":
       "/trunk/deps/third_party/ffmpeg/binaries/linux@25436",
   },