[stubs] Unify the type conversion call interface descriptors.

src/arm64/interface-descriptors-arm64.cc

Index: src/arm64/interface-descriptors-arm64.cc
diff --git a/src/arm64/interface-descriptors-arm64.cc b/src/arm64/interface-descriptors-arm64.cc
index 25cacc2b8569420c8674e318234556207982ac2f..af2ba5e0070f53e4cad1cee350217d0639b30488 100644
--- a/src/arm64/interface-descriptors-arm64.cc
+++ b/src/arm64/interface-descriptors-arm64.cc
@@ -114,37 +114,8 @@ void FastNewStrictArgumentsDescriptor::InitializePlatformSpecific(
 }
 
 
-void ToNumberDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  // x0: value
-  Register registers[] = {x0};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
-// static
-const Register ToLengthDescriptor::ReceiverRegister() { return x0; }
-
-
-// static
-const Register ToStringDescriptor::ReceiverRegister() { return x0; }
-
-
-// static
-const Register ToNameDescriptor::ReceiverRegister() { return x0; }
-
-
 // static
-const Register ToObjectDescriptor::ReceiverRegister() { return x0; }
-
-
-void NumberToStringDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  // x0: value
-  Register registers[] = {x0};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
+const Register TypeConversionDescriptor::ArgumentRegister() { return x0; }
 
 void TypeofDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
@@ -346,14 +317,6 @@ void CompareDescriptor::InitializePlatformSpecific(
 }
 
 
-void ToBooleanDescriptor::InitializePlatformSpecific(
-    CallInterfaceDescriptorData* data) {
-  // x0: value
-  Register registers[] = {x0};
-  data->InitializePlatformSpecific(arraysize(registers), registers);
-}
-
-
 void BinaryOpDescriptor::InitializePlatformSpecific(
     CallInterfaceDescriptorData* data) {
   // x1: left operand