GitLab

Don't start with Search visible, since it can cause the code that shows specific sub pages to be confused when prefs are opened to a specific URL, and leave search as the root page.

Also fixes an exception during initialization on non-ChromeOS machines.

BUG=69613
TEST=Opening prefs to a subpage by URL should show the right parent page, not Search.

Review URL: http://codereview.chromium.org/6374005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@71900 0039d316-1c4b-4281-b951-d872f2087c98