Coverity; Fixing pass by value bugs.
CID=101466, 101464, 101494, 101495, 101496, 101497

BUG=NONE
TEST=NONE

Review URL: http://codereview.chromium.org/8956046

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@115399 0039d316-1c4b-4281-b951-d872f2087c98
int ClearHistoryFunction::GetRemovalMask() const {
  return BrowsingDataRemover::REMOVE_HISTORY;
}

int ClearHistoryFunction::GetRemovalMask() const {
  return BrowsingDataRemover::REMOVE_HISTORY;
}
