Fix eliding of LTR tab title in RTL UI under non-Windows Views.

Use DrawFadeTruncatingString() on non-Windows views platforms too, now
that the implementation is no longer platform specific.

BUG=135058
TEST=Launch chromeos chrome with --lang=he and go to amazon.com.
Check that the tab title is painted LTR and elided (via fade
truncation) on the right end. Now, go to google.com. Verify
that the "Google" string is right-aligned in the tab title.
TBR=sky@chromium.org,xji@chromium.org
R=msw@chromium.org

Review URL: https://chromiumcodereview.appspot.com/10701024

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@145432 0039d316-1c4b-4281-b951-d872f2087c98
3 files changed