Account for overridden features in ANGLEPlatformDisplay key Overridden features were not included in ANGLEPlatformDisplay key causing false cache hits when querying for displays with different feature override requirements. On platforms that reuse displays across end2end test runs it resulted in the tests using the wrong display. Bug: angleproject:8275 Change-Id: Id67f3cefb821d4d0be5945f66e34f366d0768346 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4720468 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Commit-Queue: mohan maiya <m.maiya@samsung.com>