[NewPassManager] Rename AM to OuterAM in the OuterAnalysisManagerProxy [NFCI].

  /// Result proxy object for \c OuterAnalysisManagerProxy.

  class Result {

  public:

    explicit Result(const AnalysisManagerT &AM) : AM(&AM) {}

    explicit Result(const AnalysisManagerT &OuterAM) : OuterAM(&OuterAM) {}

    const AnalysisManagerT &getManager() const { return *AM; }

    const AnalysisManagerT &getManager() const { return *OuterAM; }

    /// When invalidation occurs, remove any registered invalidation events.

    bool invalidate(

    }

  private:

    const AnalysisManagerT *AM;

    const AnalysisManagerT *OuterAM;

    /// A map from an outer analysis ID to the set of this IR-unit's analyses

    /// which need to be invalidated.

        OuterAnalysisInvalidationMap;

  };

  OuterAnalysisManagerProxy(const AnalysisManagerT &AM) : AM(&AM) {}

  OuterAnalysisManagerProxy(const AnalysisManagerT &OuterAM)

      : OuterAM(&OuterAM) {}

  /// Run the analysis pass and create our proxy result object.

  /// Nothing to see here, it just forwards the \c AM reference into the

  /// Nothing to see here, it just forwards the \c OuterAM reference into the

  /// result.

  Result run(IRUnitT &, AnalysisManager<IRUnitT, ExtraArgTs...> &,

             ExtraArgTs...) {

    return Result(*AM);

    return Result(*OuterAM);

  }

private:

  static AnalysisKey Key;

  const AnalysisManagerT *AM;

  const AnalysisManagerT *OuterAM;

};

template <typename AnalysisManagerT, typename IRUnitT, typename... ExtraArgTs>