Fork backing_store.cc into backing_store_win.cc in preparation for a future CL which will delete the Windows specific code from backing_store.cc and the platform-independent code from backing_store_win.cc.
Fork backing_store.cc into backing_store_win.cc in preparation for a
future CL which will delete the Windows specific code from
backing_store.cc and the platform-independent code from
backing_store_win.cc.

By forking in this manner, history is correctly preserved.


git-svn-id: http://src.chromium.org/svn/trunk/src@8771 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: b37c98c8a54400cb900c97c13b273fbd6dffad26
meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser,meego-tablet-ux/meego-app-browser