message: [Symbol] Add missing decl for CompilerType::GetAlignedBitSize()
diff: @@ -265,6 +265,8 @@ public:
  lldb::Format GetFormat() const;
  + uint64_t GetAlignedBitSize() const;
  +
  llvm::Optional<size_t> GetTypeBitAlign(ExecutionContextScope *exe_scope) const;
  uint32_t GetNumChildren(bool omit_empty_base_classes,
  