Fix regression showing layers for nested child views.
Fix regression showing layers for nested child views.

When a view hierarchy is added to a layer, child==this was preventing nested child views from having their layers reparented.

TBR=sky
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/8086013

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@103373 0039d316-1c4b-4281-b951-d872f2087c98

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