DevTools: Make sources panel search highlight all matches.

Review URL: https://chromiumcodereview.appspot.com/18057002

git-svn-id: svn://svn.chromium.org/blink/trunk@153229 bbb929c8-8fbe-4397-9dbb-9b2b20218538
[DevTools] SearchController: revert merge artifact. EOM

Review URL: https://chromiumcodereview.appspot.com/18029019

git-svn-id: svn://svn.chromium.org/blink/trunk@153232 bbb929c8-8fbe-4397-9dbb-9b2b20218538