Make concrete classes for individual call descriptors.

src/ic/arm64/ic-compiler-arm64.cc

Index: src/ic/arm64/ic-compiler-arm64.cc
diff --git a/src/ic/arm64/ic-compiler-arm64.cc b/src/ic/arm64/ic-compiler-arm64.cc
index 315ae34d1b2863172dea07eee6e0c688be0076bc..f7e1036c7b02f2c1fea3592b51e9e84ebc7ba506 100644
--- a/src/ic/arm64/ic-compiler-arm64.cc
+++ b/src/ic/arm64/ic-compiler-arm64.cc
@@ -17,8 +17,8 @@ void PropertyICCompiler::GenerateRuntimeSetProperty(MacroAssembler* masm,
                                                     StrictMode strict_mode) {
   ASM_LOCATION("PropertyICCompiler::GenerateRuntimeSetProperty");
 
-  __ Push(StoreConvention::ReceiverRegister(), StoreConvention::NameRegister(),
-          StoreConvention::ValueRegister());
+  __ Push(StoreDescriptor::ReceiverRegister(), StoreDescriptor::NameRegister(),
+          StoreDescriptor::ValueRegister());
 
   __ Mov(x10, Smi::FromInt(strict_mode));
   __ Push(x10);
@@ -57,7 +57,7 @@ Handle<Code> PropertyICCompiler::CompilePolymorphic(TypeHandleList* types,
   // Polymorphic keyed stores may use the map register
   Register map_reg = scratch1();
   DCHECK(kind() != Code::KEYED_STORE_IC ||
-         map_reg.is(StoreConvention::MapRegister()));
+         map_reg.is(ElementTransitionAndStoreDescriptor::MapRegister()));
   __ Ldr(map_reg, FieldMemOperand(receiver(), HeapObject::kMapOffset));
   int receiver_count = types->length();
   int number_of_handled_maps = 0;