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

src/ic/arm64/handler-compiler-arm64.cc

Index: src/ic/arm64/handler-compiler-arm64.cc
diff --git a/src/ic/arm64/handler-compiler-arm64.cc b/src/ic/arm64/handler-compiler-arm64.cc
index a5e9ff26add722099a72fa72fdc82ce39b94af35..13b4f9825094f7856a2ad8a5122bed698739b48d 100644
--- a/src/ic/arm64/handler-compiler-arm64.cc
+++ b/src/ic/arm64/handler-compiler-arm64.cc
@@ -78,9 +78,7 @@ void PropertyHandlerCompiler::GenerateDictionaryNegativeLookup(
 
 void NamedLoadHandlerCompiler::GenerateDirectLoadGlobalFunctionPrototype(
     MacroAssembler* masm, int index, Register result, Label* miss) {
-  __ Ldr(result, GlobalObjectMemOperand());
-  __ Ldr(result, FieldMemOperand(result, JSGlobalObject::kNativeContextOffset));
-  __ Ldr(result, ContextMemOperand(result, index));
+  __ LoadNativeContextSlot(index, result);
   // Load its initial map. The global functions all have initial maps.
   __ Ldr(result,
          FieldMemOperand(result, JSFunction::kPrototypeOrInitialMapOffset));