Call JS functions via native context instead of js builtins object.

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 226 matching lines @@
 
 Handle<Object> Context::Lookup(Handle<String> name,
                                ContextLookupFlags flags,
                                int* index,
                                PropertyAttributes* attributes,
                                BindingFlags* binding_flags) {
   Isolate* isolate = GetIsolate();
   Handle<Context> context(this, isolate);
 
   bool follow_context_chain = (flags & FOLLOW_CONTEXT_CHAIN) != 0;
-  *index = -1;
+  *index = kNotFound;
   *attributes = ABSENT;
   *binding_flags = MISSING_BINDING;
 
   if (FLAG_trace_contexts) {
     PrintF("Context::Lookup(");
     name->ShortPrint();
     PrintF(")\n");
   }
 
   do {
@@ skipping 272 matching lines @@
 
 Handle<Object> Context::ErrorMessageForCodeGenerationFromStrings() {
   Isolate* isolate = GetIsolate();
   Handle<Object> result(error_message_for_code_gen_from_strings(), isolate);
   if (!result->IsUndefined()) return result;
   return isolate->factory()->NewStringFromStaticChars(
       "Code generation from strings disallowed for this context");
 }
 
 
+#define COMPARE_NAME(index, type, name) \
+  if (string->IsOneByteEqualTo(STATIC_CHAR_VECTOR(#name))) return index;
+
+int Context::ImportedFieldIndexForName(Handle<String> string) {
+  NATIVE_CONTEXT_IMPORTED_FIELDS(COMPARE_NAME)
+  return kNotFound;
+}
+
+
+int Context::IntrinsicIndexForName(Handle<String> string) {
+  NATIVE_CONTEXT_INTRINSIC_FUNCTIONS(COMPARE_NAME);
+  return kNotFound;
+}
+
+#undef COMPARE_NAME
+
+
 #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