Make the detailed reason for deopts mandatory on all platforms.

src/mips/lithium-codegen-mips.h

Index: src/mips/lithium-codegen-mips.h
diff --git a/src/mips/lithium-codegen-mips.h b/src/mips/lithium-codegen-mips.h
index 5402c9a7ba0065b7c9420eb470b644b5f8e51878..43316e471b5b055c17a7302c008c3ab4c2d59aba 100644
--- a/src/mips/lithium-codegen-mips.h
+++ b/src/mips/lithium-codegen-mips.h
@@ -229,14 +229,12 @@ class LCodeGen: public LCodeGenBase {
   void RegisterEnvironmentForDeoptimization(LEnvironment* environment,
                                             Safepoint::DeoptMode mode);
   void DeoptimizeIf(Condition condition, LInstruction* instr,
-                    Deoptimizer::BailoutType bailout_type,
+                    Deoptimizer::BailoutType bailout_type, const char* detail,
                     Register src1 = zero_reg,
-                    const Operand& src2 = Operand(zero_reg),
-                    const char* detail = NULL);
+                    const Operand& src2 = Operand(zero_reg));
   void DeoptimizeIf(Condition condition, LInstruction* instr,
-                    Register src1 = zero_reg,
-                    const Operand& src2 = Operand(zero_reg),
-                    const char* detail = NULL);
+                    const char* detail = NULL, Register src1 = zero_reg,
+                    const Operand& src2 = Operand(zero_reg));
 
   void AddToTranslation(LEnvironment* environment,
                         Translation* translation,