GitLab

This CL moves the 'Add site exception' button to an 'Add' button on the
header line of the site exceptions. The filter for the site data has
been moved into the list of sites. The remove all local cookie and
storage button has been removed from the list of cookies (it's still
available in the dialog).

Also, the misalignment of .secondary text in checkboxes and content
settings has been fixed.

BUG=654875, 655036
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://chromiumcodereview.appspot.com/2429973003
Cr-Commit-Position: refs/heads/master@{#426536}