[runtime] Replace global object link with native context link in all contexts.

src/interpreter/interpreter.cc

Index: src/interpreter/interpreter.cc
diff --git a/src/interpreter/interpreter.cc b/src/interpreter/interpreter.cc
index ef7735e38ccbe00521091c3aee72ba62366b7b86..48b0f3ad12e74b18edb18e48621dce2e9911ad76 100644
--- a/src/interpreter/interpreter.cc
+++ b/src/interpreter/interpreter.cc
@@ -216,7 +216,9 @@ void Interpreter::DoLoadGlobal(Callable ic,
                                compiler::InterpreterAssembler* assembler) {
   // Get the global object.
   Node* context = __ GetContext();
-  Node* global = __ LoadContextSlot(context, Context::GLOBAL_OBJECT_INDEX);
+  Node* native_context =
+      __ LoadContextSlot(context, Context::NATIVE_CONTEXT_INDEX);
+  Node* global = __ LoadContextSlot(native_context, Context::EXTENSION_INDEX);
 
   // Load the global via the LoadIC.
   Node* code_target = __ HeapConstant(ic.code());
@@ -330,7 +332,9 @@ void Interpreter::DoStoreGlobal(Callable ic,
                                 compiler::InterpreterAssembler* assembler) {
   // Get the global object.
   Node* context = __ GetContext();
-  Node* global = __ LoadContextSlot(context, Context::GLOBAL_OBJECT_INDEX);
+  Node* native_context =
+      __ LoadContextSlot(context, Context::NATIVE_CONTEXT_INDEX);
+  Node* global = __ LoadContextSlot(native_context, Context::EXTENSION_INDEX);
 
   // Store the global via the StoreIC.
   Node* code_target = __ HeapConstant(ic.code());
@@ -952,9 +956,8 @@ void Interpreter::DoCallJSRuntime(compiler::InterpreterAssembler* assembler) {
 
   // Get the function to call from the native context.
   Node* context = __ GetContext();
-  Node* global = __ LoadContextSlot(context, Context::GLOBAL_OBJECT_INDEX);
   Node* native_context =
-      __ LoadObjectField(global, JSGlobalObject::kNativeContextOffset);
+      __ LoadContextSlot(context, Context::NATIVE_CONTEXT_INDEX);
   Node* function = __ LoadContextSlot(native_context, context_index);
 
   // Call the function.