Prevent crash in test case where tests could overflow the index to the list of test socket types to create.  The backup sockets fire at ~250ms.  So, if the test takes longer than expected, it will end up creating more sockets than the  test case expects, and we could overflow this list.  We may need to do more work to make it so this never happens, but this will prevent the crash.
Prevent crash in test case where tests could overflow the index to the list of
test socket types to create.  The backup sockets fire at ~250ms.  So, if the
test takes longer than expected, it will end up creating more sockets than the 
test case expects, and we could overflow this list.  We may need to do more
work to make it so this never happens, but this will prevent the crash.

BUG=43919
TEST=TCPClientSocketPoolTest.BackupSocketConnect

Review URL: http://codereview.chromium.org/2072006

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@47669 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