Use a register spec for StoreIC and KeyedStoreIC.

src/arm64/code-stubs-arm64.cc

Index: src/arm64/code-stubs-arm64.cc
diff --git a/src/arm64/code-stubs-arm64.cc b/src/arm64/code-stubs-arm64.cc
index e24c7bd0785a594fbba195f3fff3f28a0340ecd6..5b76f1ad29f287f5be20cb890661534884dc8f7e 100644
--- a/src/arm64/code-stubs-arm64.cc
+++ b/src/arm64/code-stubs-arm64.cc
@@ -102,18 +102,6 @@ void RegExpConstructResultStub::InitializeInterfaceDescriptor(
 }
 
 
-void KeyedStoreFastElementStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  // x2: receiver
-  // x1: key
-  // x0: value
-  Register registers[] = { x2, x1, x0 };
-  descriptor->Initialize(
-      ARRAY_SIZE(registers), registers,
-      FUNCTION_ADDR(KeyedStoreIC_MissFromStubFailure));
-}
-
-
 void TransitionElementsKindStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   // x0: value (js_array)
@@ -250,17 +238,6 @@ void ToBooleanStub::InitializeInterfaceDescriptor(
 }
 
 
-void StoreGlobalStub::InitializeInterfaceDescriptor(
-    CodeStubInterfaceDescriptor* descriptor) {
-  // x1: receiver
-  // x2: key (unused)
-  // x0: value
-  Register registers[] = { x1, x2, x0 };
-  descriptor->Initialize(ARRAY_SIZE(registers), registers,
-                         FUNCTION_ADDR(StoreIC_MissFromStubFailure));
-}
-
-
 void ElementsTransitionAndStoreStub::InitializeInterfaceDescriptor(
     CodeStubInterfaceDescriptor* descriptor) {
   // x0: value