Change Windows LaunchProcess to use the StartupInformation wrapper.

This is part 1 of my nefarious plan to add the ability to pass specified
handles to child processes (on Vista+).

R=brettw@chromium.org, cpu@chromium.org

Review URL: https://codereview.chromium.org/106773005

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239242 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239242
Add gyp file to build third_party/mozilla.

This is necessary to remove ui_cocoa_third_party_toolkits target from ui.gyp.

BUG=299841
TEST=None
R=mark@chromium.org,ben@chromium.org
TBR=ben

Review URL: https://codereview.chromium.org/104533002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@239243 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 239243