Loading program binaries across different architectures would cause
runtime errors due to use of size_t.

Also fix the ANGLE major and minor version that were clobbered in an
earlier commit.

BUG=angle:647
BUG=371435

Change-Id: If2ad4c8fc246cc9ff0b4d95ba87b7d1ed109a064
Reviewed-on: https://chromium-review.googlesource.com/199102Reviewed-by: Nicolas Capens <nicolascapens@chromium.org>
Tested-by: Jamie Madill <jmadill@chromium.org>