Skip creating hot-standby DOMView instance if chromeos is shutting down.
Skip creating hot-standby DOMView instance if chromeos is shutting down.

TBR=davemoore@chromium.org
BUG=none
TEST=manual: start chromeos and kill chrome with in 5 seconds.
     It's not 100% reproducible, so you needs to try several times to
     make sure this does not happen.

Review URL: http://codereview.chromium.org/3765005

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@62697 0039d316-1c4b-4281-b951-d872f2087c98

Crystalnix/house-of-life-chromium,ropik/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,adobe/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,ropik/chromium,adobe/chromium,gavinp/chromium,adobe/chromium,Crystalnix/house-of-life-chromium,ropik/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,Crystalnix/house-of-life-chromium,gavinp/chromium,ropik/chromium,gavinp/chromium,Crystalnix/house-of-life-chromium,yitian134/chromium,yitian134/chromium,Crystalnix/house-of-life-chromium,ropik/chromium