Worked around bug in 32-bit Safari 4 on Mac OS X 10.6 where the browser sends O3D a spurious NPP_SetWindow with an invalid window after first sending it a valid one. Tested this on both 10.6 and 10.5; no ill effects on 10.5, including in multiple tab case.
Worked around bug in 32-bit Safari 4 on Mac OS X 10.6 where the
browser sends O3D a spurious NPP_SetWindow with an invalid window
after first sending it a valid one. Tested this on both 10.6 and 10.5;
no ill effects on 10.5, including in multiple tab case.

Review URL: http://codereview.chromium.org/572027

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@38236 0039d316-1c4b-4281-b951-d872f2087c98

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