Move (uppercase) JS builtins from js builtins object to native context.

src/contexts.cc

 // Copyright 2011 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.
 
 #include "src/contexts.h"
 
 #include "src/bootstrapper.h"
 #include "src/debug/debug.h"
 #include "src/scopeinfo.h"
 
@@ skipping 536 matching lines @@
 
 
 int Context::IntrinsicIndexForName(Handle<String> string) {
   NATIVE_CONTEXT_INTRINSIC_FUNCTIONS(COMPARE_NAME);
   return kNotFound;
 }
 
 #undef COMPARE_NAME
 
 
+bool Context::IsJSBuiltin(Handle<Context> native_context,
+                          Handle<JSFunction> function) {
+#define COMPARE_FUNCTION(index, type, name) \
+  if (*function == native_context->get(index)) return true;
+  NATIVE_CONTEXT_JS_BUILTINS(COMPARE_FUNCTION);
+#undef COMPARE_FUNCTION
+  return false;
+}
+
+
 #ifdef DEBUG
 bool Context::IsBootstrappingOrValidParentContext(
     Object* object, Context* child) {
   // During bootstrapping we allow all objects to pass as
   // contexts. This is necessary to fix circular dependencies.
   if (child->GetIsolate()->bootstrapper()->IsActive()) return true;
   if (!object->IsContext()) return false;
   Context* context = Context::cast(object);
   return context->IsNativeContext() || context->IsScriptContext() ||
          context->IsModuleContext() || !child->IsModuleContext();
 }
 
 
 bool Context::IsBootstrappingOrGlobalObject(Isolate* isolate, Object* object) {
   // During bootstrapping we allow all objects to pass as global
   // objects. This is necessary to fix circular dependencies.
   return isolate->heap()->gc_state() != Heap::NOT_IN_GC ||
       isolate->bootstrapper()->IsActive() ||
       object->IsGlobalObject();
 }
 #endif
 
 }  // namespace internal
 }  // namespace v8