extract_from_cab script now takes a global lock while extracting from the CAB file.
extract_from_cab script now takes a global lock while extracting from the CAB file.

I suspect the Microsoft expand tool does not work reliably if invoked concurrently. Since a recent change to extract the xinput DLL using the same script, but for a different target than the D3D DLLs, it is possible that expand_from_cab.py can be invoked concurrently.

BUG=107291
Review URL: http://codereview.chromium.org/8921029

git-svn-id: de016e52bd170d2d4f2344f9bf92d50478b649e0@114132 0039d316-1c4b-4281-b951-d872f2087c98

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