Don't focus the location bar for NTP navigations in non-selected tabs.

BUG=677716
TEST=See bug for repro steps.

Review-Url: https://codereview.chromium.org/2624373002
Cr-Commit-Position: refs/heads/master@{#443338}
void Browser::RequestToLockMouse(WebContents* web_contents,
                                 bool user_gesture,
                                 bool last_unlocked_by_target) {
  exclusive_access_manager_->mouse_lock_controller()->RequestToLockMouse(
      web_contents, user_gesture, last_unlocked_by_target);
}

void Browser::RequestToLockMouse(WebContents* web_contents,
                                 bool user_gesture,
                                 bool last_unlocked_by_target) {
  exclusive_access_manager_->mouse_lock_controller()->RequestToLockMouse(
      web_contents, user_gesture, last_unlocked_by_target);
}
