X87: [runtime] Replace global object link with native context link in all contexts.

src/crankshaft/x87/lithium-codegen-x87.cc

Index: src/crankshaft/x87/lithium-codegen-x87.cc
diff --git a/src/crankshaft/x87/lithium-codegen-x87.cc b/src/crankshaft/x87/lithium-codegen-x87.cc
index da6e81f6dfdbda97134ae785123e6894d1ad2000..6cebdf6781ea76eab0ed8ecb33c04e1010ada7fa 100644
--- a/src/crankshaft/x87/lithium-codegen-x87.cc
+++ b/src/crankshaft/x87/lithium-codegen-x87.cc
@@ -3459,10 +3459,8 @@ void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) {
   __ jmp(&receiver_ok, Label::kNear);
   __ bind(&global_object);
   __ mov(receiver, FieldOperand(function, JSFunction::kContextOffset));
-  const int global_offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX);
-  __ mov(receiver, Operand(receiver, global_offset));
-  const int proxy_offset = JSGlobalObject::kGlobalProxyOffset;
-  __ mov(receiver, FieldOperand(receiver, proxy_offset));
+  __ mov(receiver, ContextOperand(receiver, Context::NATIVE_CONTEXT_INDEX));
+  __ mov(receiver, ContextOperand(receiver, Context::GLOBAL_PROXY_INDEX));
   __ bind(&receiver_ok);
 }