Use source position table for crankshaft code.

src/crankshaft/mips/lithium-codegen-mips.h

Index: src/crankshaft/mips/lithium-codegen-mips.h
diff --git a/src/crankshaft/mips/lithium-codegen-mips.h b/src/crankshaft/mips/lithium-codegen-mips.h
index d2b0d2dcaefc5f9fb4b0cb545070e9cc3fd28862..4941d8ba3a01c00896140ca194431efd848ed43a 100644
--- a/src/crankshaft/mips/lithium-codegen-mips.h
+++ b/src/crankshaft/mips/lithium-codegen-mips.h
@@ -251,7 +251,7 @@ class LCodeGen: public LCodeGenBase {
 
   void EmitIntegerMathAbs(LMathAbs* instr);
 
-  // Support for recording safepoint and position information.
+  // Support for recording safepoint information.
   void RecordSafepoint(LPointerMap* pointers,
                        Safepoint::Kind kind,
                        int arguments,
@@ -262,8 +262,6 @@ class LCodeGen: public LCodeGenBase {
                                     int arguments,
                                     Safepoint::DeoptMode mode);
 
-  void RecordAndWritePosition(int position) override;
-
   static Condition TokenToCondition(Token::Value op, bool is_unsigned);
   void EmitGoto(int block);