Revert "Load mUniformLocations using loadVector" This reverts commit 6f526b8f52d17bf89082a901f06df6edb75a7dbd. Reason for revert: Suspected cause of MSAN failure. See: https://chromium-review.googlesource.com/c/angle/angle/+/4851776 Original change's description: > Load mUniformLocations using loadVector > > Bug: b/275102061 > Change-Id: I1da5bdd6bf0ec40cd877c2274a8fe1ee0b11267a > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4849551 > Reviewed-by: Roman Lavrov <romanl@google.com> > Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> > Commit-Queue: Charlie Lao <cclao@google.com> Bug: b/275102061 Bug: chromium:1480543 Change-Id: I50c39758d180320465b152ad32ba9447878f7d8a Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4855538 Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org> Bot-Commit: Rubber Stamper <rubber-stamper@appspot.gserviceaccount.com>