Enable preaging of code objects when --optimize-for-size.

src/mips/macro-assembler-mips.h

Index: src/mips/macro-assembler-mips.h
diff --git a/src/mips/macro-assembler-mips.h b/src/mips/macro-assembler-mips.h
index 84e60bafc1ed0e0d313adcb9ff25721214db0b40..0805bb967073ca3801113707e2936b97017c5e9b 100644
--- a/src/mips/macro-assembler-mips.h
+++ b/src/mips/macro-assembler-mips.h
@@ -1498,6 +1498,9 @@ class MacroAssembler: public Assembler {
     And(reg, reg, Operand(mask));
   }
 
+  // Generates function and stub prologue code.
+  void Prologue(PrologueFrameMode frame_mode);
+
   // Activation support.
   void EnterFrame(StackFrame::Type type);
   void LeaveFrame(StackFrame::Type type);