Revert 253006 "Clear any open dialogs when the renderer process ..."

possible cause of this failure
http://build.chromium.org/p/chromium.chromiumos/builders/Linux%20ChromiumOS%20Tests%20%282%29/builds/21812

OpenSpecialTypes/FileManagerBrowserTest.Test/0
OpenSpecialTypes/FileManagerBrowserTest.Test/1
OpenSpecialTypes/FileManagerBrowserTest.Test/2

> Clear any open dialogs when the renderer process goes away.
> 
> BUG=343625
> TEST=See bug for repro steps.
> R=darin@chromium.org
> 
> Review URL: https://codereview.chromium.org/177123002

TBR=creis@chromium.org

Review URL: https://codereview.chromium.org/178613004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@253039 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 253039