Remove uses of result size in TailCallRuntime and friends

src/ppc/macro-assembler-ppc.h

Index: src/ppc/macro-assembler-ppc.h
diff --git a/src/ppc/macro-assembler-ppc.h b/src/ppc/macro-assembler-ppc.h
index 7ae629deed5154e34deb0e941b8698b82163933d..316688e40949f39f33a16c731190adb3fd00b023 100644
--- a/src/ppc/macro-assembler-ppc.h
+++ b/src/ppc/macro-assembler-ppc.h
@@ -949,11 +949,10 @@ class MacroAssembler : public Assembler {
   // Like JumpToExternalReference, but also takes care of passing the number
   // of parameters.
   void TailCallExternalReference(const ExternalReference& ext,
-                                 int num_arguments, int result_size);
+                                 int num_arguments);
 
   // Convenience function: tail call a runtime routine (jump).
-  void TailCallRuntime(Runtime::FunctionId fid, int num_arguments,
-                       int result_size);
+  void TailCallRuntime(Runtime::FunctionId fid, int num_arguments);
 
   int CalculateStackPassedWords(int num_reg_arguments,
                                 int num_double_arguments);