Convert String and List to abstract classes.

runtime/vm/object.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_OBJECT_H_
 #define VM_OBJECT_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/utils.h"
@@ skipping 3076 matching lines @@
 
   // Check if this type represents the 'int' type.
   bool IsIntType() const;
 
   // Check if this type represents the 'double' type.
   bool IsDoubleType() const;
 
   // Check if this type represents the 'num' type.
   bool IsNumberType() const;
 
-  // Check if this type represents the 'String' interface.
-  bool IsStringInterface() const;
+  // Check if this type represents the 'String' type.
+  bool IsStringType() const;
 
   // Check if this type represents the 'Function' type.
   bool IsFunctionType() const;
 
-  // Check if this type represents the 'List' interface.
-  bool IsListInterface() const;
+  // Check if this type represents the 'List' type.
+  bool IsListType() const;
 
   // Check if this type is an interface type.
   bool IsInterfaceType() const {
     if (!HasResolvedTypeClass()) {
       return false;
     }
     const Class& cls = Class::Handle(type_class());
     return !cls.IsNull() && cls.is_interface();
   }
 
@@ skipping 96 matching lines @@
 
   // The 'Mint' type.
   static RawType* MintType();
 
   // The 'double' type.
   static RawType* Double();
 
   // The 'num' interface type.
   static RawType* Number();
 
-  // The 'String' interface type.
-  static RawType* StringInterface();
+  // The 'String' type.
+  static RawType* StringType();
 
   // The 'Function' interface type.
   static RawType* Function();
 
-  // The 'List' interface type.
-  static RawType* ListInterface();
+  // The 'List' type.
+  static RawType* ListType();
 
   // The finalized type of the given non-parameterized class.
   static RawType* NewNonParameterizedType(const Class& type_class);
 
   static RawType* New(const Object& clazz,
                       const AbstractTypeArguments& arguments,
                       intptr_t token_pos,
                       Heap::Space space = Heap::kOld);
 
  private:
@@ skipping 2481 matching lines @@
     if (this->CharAt(i) != str.CharAt(begin_index + i)) {
       return false;
     }
   }
   return true;
 }
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_H_