Create directory if the given gtest_output path is in an unexisting directory.
Create directory if the given gtest_output path is in an unexisting directory.

BUG=42781
TEST=Run one of out-of-process-tests (e.g. browser_tests) with --gtest_output=xml:unexisting_dir/output.xml parameter and see if the specified unexisting_dir is successfully created (if it's in a writable location).

Review URL: http://codereview.chromium.org/2302003

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@48468 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