Merge "Update documentation for VisitDirectDeps"

	// VisitDirectDeps calls visit for each direct dependency.  If there are multiple

	// direct dependencies on the same module visit will be called multiple times on that module

	// and OtherModuleDependencyTag will return a different tag for each.  It skips any

	// dependencies that are not an android.Module.

	// and OtherModuleDependencyTag will return a different tag for each.  It raises an error if any of the

	// dependencies are not an android.Module.

	//

	// The Module passed to the visit function should not be retained outside of the visit

	// function, it may be invalidated by future mutators.