Reland "Vulkan: Implement OES_get_program_binary extension" Reason for revert: default uniform initialization was incomplete This change has the following fixes: 1. Add missing default uniform initialization when loading program binaries. 2. Re-enable OES Program Binary capabilities for Vulkan. 3. Added two angle end2end test, - ProgramBinaryES3Test.BinaryWithLargeUniformCount uses several uniforms across the vertex and fragment shaders. - ProgramBinaryES3Test.ActiveUniformShader tests the difference between uniform static and active use Bug: angleproject:3216 Bug: angleproject:3217 Bug: angleproject:3665 Tests: dEQP-GLES3.functional.shader_api.program_binary* angle_end2end_tests --gtest_filter=ProgramBinary* Change-Id: If6886f01241d65bb1e17a21cc3406533021072ee Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1699069 Commit-Queue: Mohan Maiya <m.maiya@samsung.com> Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>