Merge GlobalObject with JSGlobalObject.

src/crankshaft/arm64/lithium-codegen-arm64.cc

Index: src/crankshaft/arm64/lithium-codegen-arm64.cc
diff --git a/src/crankshaft/arm64/lithium-codegen-arm64.cc b/src/crankshaft/arm64/lithium-codegen-arm64.cc
index 292014a5d53d3638880363f01cf414934d0cd022..20f5be0fba4c22d9df30fa2cb9930331e7311c56 100644
--- a/src/crankshaft/arm64/lithium-codegen-arm64.cc
+++ b/src/crankshaft/arm64/lithium-codegen-arm64.cc
@@ -643,7 +643,7 @@ bool LCodeGen::GeneratePrologue() {
       __ JumpIfNotRoot(x10, Heap::kUndefinedValueRootIndex, &ok);
 
       __ Ldr(x10, GlobalObjectMemOperand());
-      __ Ldr(x10, FieldMemOperand(x10, GlobalObject::kGlobalProxyOffset));
+      __ Ldr(x10, FieldMemOperand(x10, JSGlobalObject::kGlobalProxyOffset));
       __ Poke(x10, receiver_offset);
 
       __ Bind(&ok);
@@ -5873,7 +5873,7 @@ void LCodeGen::DoWrapReceiver(LWrapReceiver* instr) {
   __ Bind(&global_object);
   __ Ldr(result, FieldMemOperand(function, JSFunction::kContextOffset));
   __ Ldr(result, ContextMemOperand(result, Context::GLOBAL_OBJECT_INDEX));
-  __ Ldr(result, FieldMemOperand(result, GlobalObject::kGlobalProxyOffset));
+  __ Ldr(result, FieldMemOperand(result, JSGlobalObject::kGlobalProxyOffset));
   __ B(&done);
 
   __ Bind(&copy_receiver);