Passes all ETC1 related dEQP tests on Windows. BUG=angleproject:1212 TEST=dEQP-GLES2.capability.extensions.compressed_texture_formats.GL_OES_compressed_ETC1_RGB8_texture TEST=dEQP-GLES2.functional.texture.format.* TEST=dEQP-GLES2.functional.texture.wrap.* TEST=dEQP-GLES2.functional.texture.filtering.* TEST=dEQP-GLES3.functional.texture.format.compressed.etc1* TEST=dEQP-GLES3.functional.texture.filtering.* Change-Id: I937b039f90161bb5e8777766ea0c032ddfbbf159 Reviewed-on: https://chromium-review.googlesource.com/312416Reviewed-by: Geoff Lang <geofflang@chromium.org> Tryjob-Request: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Tested-by: Minmin Gong <mgong@microsoft.com>
