Move shaderc::CompileOptions to test fixture.
Move shaderc::CompileOptions to test fixture.

fuchsia-mirror/third_party-shaderc,fuchsia-mirror/third_party-shaderc,fuchsia-mirror/third_party-shaderc,AWoloszyn/shaderc,Qining/shaderc,dneto0/shaderc,antiagainst/shaderc,antiagainst/shaderc,AWoloszyn/shaderc,AWoloszyn/shaderc,dneto0/shaderc,antiagainst/shaderc,Qining/shaderc,Qining/shaderc,dneto0/shaderc,antiagainst/shaderc,dneto0/shaderc