Roll SPIRV-Cross and use upstream repo.

In the DEPS file we are going to use Chromium's mirror of
github.com/KhronosGroup/SPIRV-Cross so we need to adjust .gitmodules to
point to it instead of Kangz/SPIRV-Cross. Also take that opportunity to
roll SPIRV-Cross.

Change-Id: I4f53a4fc54f5b1b9a754ac55e976c81e5eeabeb2

src/dawn_native/opengl/ShaderModuleGL.cpp

@@ -58,7 +58,7 @@ namespace dawn_native { namespace opengl {
 #else
         options.version = 440;
 #endif
-        compiler.set_options(options);
+        compiler.set_common_options(options);
 
         // Rename the push constant block to be prefixed with the shader stage type so that uniform
         // names don't match between the FS and the VS.