MIPS: Fix BlockTrampolinePoolFor() to emit trampoline before blocking, if needed.

src/mips/assembler-mips.h

Index: src/mips/assembler-mips.h
diff --git a/src/mips/assembler-mips.h b/src/mips/assembler-mips.h
index 386946dc0cd29caf8c05e18a9a55ff1a1ce96940..bc2854a4046e9db59cc305332715227d8e83b09b 100644
--- a/src/mips/assembler-mips.h
+++ b/src/mips/assembler-mips.h
@@ -1298,7 +1298,7 @@ class Assembler : public AssemblerBase {
   inline void CheckBuffer();
   void GrowBuffer();
   inline void emit(Instr x);
-  inline void CheckTrampolinePoolQuick();
+  inline void CheckTrampolinePoolQuick(int extra_instructions = 0);
 
   // Instruction generation.
   // We have 3 different kind of encoding layout on MIPS.