Remove support for externally backed elements from the API

src/api.h

 // Copyright 2012 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_API_H_
 #define V8_API_H_
 
 #include "src/v8.h"
 
 #include "include/v8-testing.h"
@@ skipping 321 matching lines @@
 
 
 // Implementations of ToLocal
 
 #define MAKE_TO_LOCAL(Name, From, To)                                       \
   Local<v8::To> Utils::Name(v8::internal::Handle<v8::internal::From> obj) { \
     return Convert<v8::internal::From, v8::To>(obj);  \
   }
 
 
-#define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype, size)        \
-  Local<v8::Type##Array> Utils::ToLocal##Type##Array(                       \
-      v8::internal::Handle<v8::internal::JSTypedArray> obj) {               \
-    DCHECK(obj->type() == kExternal##Type##Array);                          \
-    return Convert<v8::internal::JSTypedArray, v8::Type##Array>(obj);       \
+#define MAKE_TO_LOCAL_TYPED_ARRAY(Type, typeName, TYPE, ctype, size)  \
+  Local<v8::Type##Array> Utils::ToLocal##Type##Array(                 \
+      v8::internal::Handle<v8::internal::JSTypedArray> obj) {         \
+    DCHECK(obj->type() == v8::internal::kExternal##Type##Array);      \
+    return Convert<v8::internal::JSTypedArray, v8::Type##Array>(obj); \
   }
 
 
 MAKE_TO_LOCAL(ToLocal, Context, Context)
 MAKE_TO_LOCAL(ToLocal, Object, Value)
 MAKE_TO_LOCAL(ToLocal, JSFunction, Function)
 MAKE_TO_LOCAL(ToLocal, Name, Name)
 MAKE_TO_LOCAL(ToLocal, String, String)
 MAKE_TO_LOCAL(ToLocal, Symbol, Symbol)
 MAKE_TO_LOCAL(ToLocal, JSRegExp, RegExp)
@@ skipping 344 matching lines @@
     stress_type_ = stress_type;
   }
 
  private:
   static v8::Testing::StressType stress_type_;
 };
 
 } }  // namespace v8::internal
 
 #endif  // V8_API_H_