ES31: Add glGetProgramResourceName API Add API entry and validation checks(GLES 3.1 section 7.3). Add the first 2 interfaces(PROGRAM_INPUT and PROGRAM_OUTPUT) implementation. BUG=angleproject:1920 Change-Id: Ide7d5ad40a611a091c3dffab47fd31da57b69f1d Reviewed-on: https://chromium-review.googlesource.com/457523 Commit-Queue: Geoff Lang <geofflang@chromium.org> Reviewed-by: Geoff Lang <geofflang@chromium.org>