aura: Pass shadow, animation, and power button switches.
aura: Pass shadow, animation, and power button switches.

This passes --aura-legacy-power-button, --aura-no-shadows,
and --aura-window-animations-disabled through to guest mode.

BUG=none
TEST=none


Review URL: http://codereview.chromium.org/9405032

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@122223 0039d316-1c4b-4281-b951-d872f2087c98

adobe/chromium,yitian134/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,yitian134/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,adobe/chromium,ropik/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,yitian134/chromium,adobe/chromium,ropik/chromium,gavinp/chromium,gavinp/chromium,gavinp/chromium,ropik/chromium,yitian134/chromium,adobe/chromium,adobe/chromium,ropik/chromium,adobe/chromium,adobe/chromium,adobe/chromium,yitian134/chromium,gavinp/chromium,yitian134/chromium,yitian134/chromium,adobe/chromium,gavinp/chromium