Aura impl of Linux Process Singleton Dialog.

Move call of aura::Env::CreateInstance() even earlier in chrome_browser_main.cc.

BUG=284564

Review URL: https://codereview.chromium.org/80153002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236677 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236677
Add missing events dependency to ui/ozone for component=shared_library

This fixes runtime symbol errors in libozone. We inject into ui/events and so
need a dependency on it.

Review URL: https://codereview.chromium.org/81113004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@236678 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 236678