Strip the invalid characters from the string used as mspdbsrv endpoint.

Patch from sebmarchand@chromium.org.

R=scottmg@chromium.org
BUG=335607

Review URL: https://codereview.chromium.org/141163014

git-svn-id: http://gyp.googlecode.com/svn/trunk@1840 78cadc50-ecff-11dd-a971-7dbc132099af
1 file changed