Enabled inbrowser_test_runner on Windows.
Enabled inbrowser_test_runner on Windows.

BUG= none
TEST= Windows: scons.bat chrome_browser_tests (should run inbrowser_test_runner)

Review URL: http://codereview.chromium.org/6621050

git-svn-id: 721b910a23eff8a86f00c8fd261a7587cddf18f8@4466 fcba33aa-ac0c-11dd-b9e7-8d5594d729c2

nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,nacl-webkit/native_client,sbc100/native_client,sbc100/native_client