[turbofan] Remove remaining uses of Class type from the compiler.

src/types.h

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef V8_TYPES_H_
 #define V8_TYPES_H_
 
 #include "src/conversions.h"
 #include "src/handles.h"
 #include "src/objects.h"
@@ skipping 746 matching lines @@
   static Type* Of(double value, Zone* zone) {
     return BitsetType::New(BitsetType::ExpandInternals(BitsetType::Lub(value)));
   }
   static Type* Of(i::Object* value, Zone* zone) {
     return BitsetType::New(BitsetType::ExpandInternals(BitsetType::Lub(value)));
   }
   static Type* Of(i::Handle<i::Object> value, Zone* zone) {
     return Of(*value, zone);
   }
 
+  static Type* For(i::Map* map) {
+    return BitsetType::New(BitsetType::ExpandInternals(BitsetType::Lub(map)));
+  }
+  static Type* For(i::Handle<i::Map> map) { return For(*map); }
+
   // Extraction of components.
   static Type* Representation(Type* t, Zone* zone);
   static Type* Semantic(Type* t, Zone* zone);
 
   // Predicates.
   bool IsInhabited() { return BitsetType::IsInhabited(this->BitsetLub()); }
 
   bool Is(Type* that) { return this == that || this->SlowIs(that); }
   bool Maybe(Type* that);
   bool Equals(Type* that) { return this->Is(that) && that->Is(this); }
@@ skipping 196 matching lines @@
 
   bool Narrows(Bounds that) {
     return that.lower->Is(this->lower) && this->upper->Is(that.upper);
   }
 };
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TYPES_H_