Remove empty directory.

git-svn-id: svn://svn.chromium.org/blink/trunk@155460 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Remove a bunch of unused try* methods from Vector.

BUG=none
TEST=compiles

Review URL: https://chromiumcodereview.appspot.com/21885007

git-svn-id: svn://svn.chromium.org/blink/trunk@155461 bbb929c8-8fbe-4397-9dbb-9b2b20218538