message: Add some constness to MethodProfiles
  Summary: See title.
diff: @@ -53,9 +53,9 @@ class MethodProfiles {
  return success;
  }
  - bool is_initialized() { return m_initialized; }
  + bool is_initialized() const { return m_initialized; }
  - bool has_stats() { return !m_method_stats.empty(); }
  + bool has_stats() const { return !m_method_stats.empty(); }
  const std::unordered_map<const DexMethodRef*, Stats>& method_stats() const {
  return m_method_stats;
  