Prevent multiple threads from executing the DumpDoneCallback handler - So respawning the browser is more reliable.
Prevent multiple threads from executing the DumpDoneCallback handler
- So respawning the browser is more reliable.

BUG=25091
TEST=see bug


Review URL: http://codereview.chromium.org/283024

git-svn-id: http://src.chromium.org/svn/trunk/src@29364 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

Former-commit-id: 3940a5adf900af9bf3acc11f27a028c8028785a6
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