The expected view port is different from current viewport translation
when the clip origin is the upper left. So now, it has four different
view port translations based on clip origin and y-flip of framebuffer.

- add query and state management for EXT_clip_control
- add dirty bit for clip control
- change viewport, scissor and cull face when clip origin changes

Bug: angleproject:5471
Tests: dEQP-GLES2.functional.clip_control.*
Change-Id: I78dc752c3287b09f25496034e0d0d2724138010c
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2615863
Commit-Queue: Mohan Maiya <m.maiya@samsung.com>
Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
Reviewed-by: Jamie Madill <jmadill@chromium.org>