Remove uses of result size in TailCallRuntime and friends

src/arm64/macro-assembler-arm64.cc

Index: src/arm64/macro-assembler-arm64.cc
diff --git a/src/arm64/macro-assembler-arm64.cc b/src/arm64/macro-assembler-arm64.cc
index 819f2973e2309fbeb94c5728b88ca5e9565b927d..abbaa32c082c59fa5457b16837d5f42445679437 100644
--- a/src/arm64/macro-assembler-arm64.cc
+++ b/src/arm64/macro-assembler-arm64.cc
@@ -1728,8 +1728,7 @@ void MacroAssembler::InvokeBuiltin(int native_context_index, InvokeFlag flag,
 
 
 void MacroAssembler::TailCallExternalReference(const ExternalReference& ext,
-                                               int num_arguments,
-                                               int result_size) {
+                                               int num_arguments) {
   // TODO(1236192): Most runtime routines don't need the number of
   // arguments passed in because it is constant. At some point we
   // should remove this need and make the runtime routine entry code
@@ -1740,11 +1739,8 @@ void MacroAssembler::TailCallExternalReference(const ExternalReference& ext,
 
 
 void MacroAssembler::TailCallRuntime(Runtime::FunctionId fid,
-                                     int num_arguments,
-                                     int result_size) {
-  TailCallExternalReference(ExternalReference(fid, isolate()),
-                            num_arguments,
-                            result_size);
+                                     int num_arguments) {
+  TailCallExternalReference(ExternalReference(fid, isolate()), num_arguments);
 }