Move register conventions out of the IC classes.

src/ic/ic.h

Index: src/ic/ic.h
diff --git a/src/ic/ic.h b/src/ic/ic.h
index f41bb9ae51f6f8cf5a16034c16af29c0b5f329c8..f759a0633775d143e30aa1c6db0cf872642980c1 100644
--- a/src/ic/ic.h
+++ b/src/ic/ic.h
@@ -352,15 +352,6 @@ OStream& operator<<(OStream& os, const CallIC::State& s);
 
 class LoadIC : public IC {
  public:
-  enum ParameterIndices { kReceiverIndex, kNameIndex, kParameterCount };
-  static const Register ReceiverRegister();
-  static const Register NameRegister();
-
-  // With flag vector-ics, there is an additional argument. And for calls from
-  // crankshaft, yet another.
-  static const Register SlotRegister();
-  static const Register VectorRegister();
-
   class State V8_FINAL BASE_EMBEDDED {
    public:
     explicit State(ExtraICState extra_ic_state) : state_(extra_ic_state) {}
@@ -531,16 +522,6 @@ class StoreIC : public IC {
   // IC state.
   static const ExtraICState kStrictModeState = 1 << StrictModeState::kShift;
 
-  enum ParameterIndices {
-    kReceiverIndex,
-    kNameIndex,
-    kValueIndex,
-    kParameterCount
-  };
-  static const Register ReceiverRegister();
-  static const Register NameRegister();
-  static const Register ValueRegister();
-
   StoreIC(FrameDepth depth, Isolate* isolate) : IC(depth, isolate) {
     DCHECK(IsStoreStub());
   }
@@ -630,11 +611,6 @@ class KeyedStoreIC : public StoreIC {
     return ExtraICStateKeyedAccessStoreMode::decode(extra_state);
   }
 
-  // The map register isn't part of the normal call specification, but
-  // ElementsTransitionAndStoreStub, used in polymorphic keyed store
-  // stub implementations requires it to be initialized.
-  static const Register MapRegister();
-
   KeyedStoreIC(FrameDepth depth, Isolate* isolate) : StoreIC(depth, isolate) {
     DCHECK(target()->is_keyed_store_stub());
   }