Remove DEBUG_JIT from Zygote flags.

The flag is being obsolete by the move to JIT.

(cherry picked from commit 0f042e04efba887557e40f981bd9c41b121c4652)

Change-Id: I32c3183e791690964c00fab02a6ee7bbacf6b665
diff --git a/runtime/runtime.h b/runtime/runtime.h
index a8ba19b..386d88f 100644
--- a/runtime/runtime.h
+++ b/runtime/runtime.h
@@ -588,6 +588,10 @@
   double GetHashTableMinLoadFactor() const;
   double GetHashTableMaxLoadFactor() const;
 
+  void SetSafeMode(bool mode) {
+    safe_mode_ = mode;
+  }
+
  private:
   static void InitPlatformSignalHandlers();
 
@@ -791,6 +795,9 @@
   // Whether or not we are on a low RAM device.
   bool is_low_memory_mode_;
 
+  // Whether the application should run in safe mode, that is, interpreter only.
+  bool safe_mode_;
+
   DISALLOW_COPY_AND_ASSIGN(Runtime);
 };
 std::ostream& operator<<(std::ostream& os, const Runtime::CalleeSaveType& rhs);