GLSL only supports explicit conversion through constructors. Therefore the conversion nodes are redundant. BUG=15415045 Change-Id: Ia6bd93c9c4a69d013a4ec82f81826e6ff5c18eb2 Reviewed-on: https://swiftshader-review.googlesource.com/1113Reviewed-by: Nicolas Capens <nicolascapens@google.com>
