Add a couple more tests
Add a couple more tests

These tests were useful for debugging reference_trusted_thread.cc.
Test an easily-forwarded system call, dup().  Also test clone()
directly, in addition to testing it indirectly via pthread_create().
Check for leaked FDs.

Change the test runner to run all tests, even if one fails, rather
than stopping at the first failed test.

Review URL: http://codereview.chromium.org/1750014

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/1756015

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@45806 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