Attempt to fix ChromeFrame perf test failures on the experimental builder. The test fails because of a crash while running one of the chrome frame creation tests. This test causes a crash on the builder and it appears to occur because of multiple chrome frame dlls being loaded in the process. One from the regular release\servers folder and the other one from the reference build. 
Attempt to fix ChromeFrame perf test failures on the experimental builder. The test fails because of a crash while running
one of the chrome frame creation tests. This test causes a crash on the builder and it appears to occur because of multiple
chrome frame dlls being loaded in the process. One from the regular release\servers folder and the other one from the
reference build. 

Attempted fix is to add a sleep after the call to CoFreeUnusedLibraries to allow the currently loaded chrome frame binary
to unload.

TBR=amit

Review URL: http://codereview.chromium.org/2840024

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@51095 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser