Code:  uint64 Clipboard::GetSequenceNumber(Buffer buffer) {
  return 0;
 }

Vulnerability Type: 
CWE ID: 
Summary: Google Chrome before 17.0.963.46 does not prevent monitoring of the clipboard after a paste event, which has unspecified impact and remote attack vectors.
Commit Message: Use XFixes to update the clipboard sequence number.

BUG=73478
TEST=manual testing

Review URL: http://codereview.chromium.org/8501002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@109528 0039d316-1c4b-4281-b951-d872f2087c98