Make the search in password manager case insensitive

This matches other text search behavior in Chrome

BUG=327616

Review URL: https://codereview.chromium.org/112113003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240753 0039d316-1c4b-4281-b951-d872f2087c98
Move StatsCollectionController from CppBoundClass to gin::Wrappable

BUG=297480
R=aa@chromium.org,abarth@chromium.org

Review URL: https://codereview.chromium.org/113933002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@240754 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 240754