Fix debug annotations and shaders. The Program refactor inadvertantly broken Debug annotations. Fix this by correctly passing the path to the temporary shader source in the first "C" string argument to ShCompile, instead of as the first part of the source string. BUG=angleproject:1177 TEST=manual testing with MSVS Change-Id: Ie77bb11b51645a474b542ddd2ae0f391e019e341 Reviewed-on: https://chromium-review.googlesource.com/306210 Tryjob-Request: Jamie Madill <jmadill@chromium.org> Tested-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Corentin Wallez <cwallez@chromium.org>