Add angle.isolate. This will allow us to properly layer the isolate dependencies within Chromium. Now that ui/gl will depend on libGLESv2 on Windows, and other platforms to come, most everything will need to have the ANGLE libraries bundled. BUG=436191 Change-Id: Ifa6c87d3b7840bfbbd4830b218b6d3524258fe12 Reviewed-on: https://chromium-review.googlesource.com/254063 Reviewed-by: Kenneth Russell <kbr@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org>