Previously the initEssentialUI_ has lines

* that can be done at the earlier steps.
* that are no longer needed.
* that should be done in the FileManagerUI class.

This CL removed the above lines.

BUG=267281
TEST=manually
R=mtomasz@chromium.org

Review URL: https://codereview.chromium.org/27300004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@229076 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 229076