message: Comments for LayoutReachabilityPass
diff: #include "Pass.h"
  #include "PassManager.h"
  +/**
  + * This pass is meant to be run after OptimizeResourcesPass. Its purpose is
  + * simply to define a discrete place in the pass order for the reachability of
  + * classes to be recomputed, after dead resource files have been removed.
  + */
  class LayoutReachabilityPass : Pass {
  public:
  LayoutReachabilityPass() : Pass("LayoutReachabilityPass") {}
  