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

src/ic/ppc/handler-compiler-ppc.cc

Index: src/ic/ppc/handler-compiler-ppc.cc
diff --git a/src/ic/ppc/handler-compiler-ppc.cc b/src/ic/ppc/handler-compiler-ppc.cc
index 48a905793bfb0f6dc2b757e967e9443d460b5dd5..cb73c1725dde9cefe47e90c3254de6780c13d1b9 100644
--- a/src/ic/ppc/handler-compiler-ppc.cc
+++ b/src/ic/ppc/handler-compiler-ppc.cc
@@ -169,11 +169,7 @@ void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup(
 
 void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
     MacroAssembler* masm, int index, Register result, Label* miss) {
-  const int offset = Context::SlotOffset(Context::GLOBAL_OBJECT_INDEX);
-  __ LoadP(result, MemOperand(cp, offset));
-  __ LoadP(result,
-           FieldMemOperand(result, JSGlobalObject::kNativeContextOffset));
-  __ LoadP(result, MemOperand(result, Context::SlotOffset(index)));
+  __ LoadNativeContextSlot(index, result);
   // Load its initial map. The global functions all have initial maps.
   __ LoadP(result,
            FieldMemOperand(result, JSFunction::kPrototypeOrInitialMapOffset));