Make more use of the NumberInfo data....

src/virtual-frame-inl.h

Index: src/virtual-frame-inl.h
===================================================================
--- src/virtual-frame-inl.h	(revision 4025)
+++ src/virtual-frame-inl.h	(working copy)
@@ -40,7 +40,7 @@
     : elements_(parameter_count() + local_count() + kPreallocatedElements),
       stack_pointer_(parameter_count() + 1) {  // 0-based index of TOS.
   for (int i = 0; i <= stack_pointer_; i++) {
-    elements_.Add(FrameElement::MemoryElement(NumberInfo::kUnknown));
+    elements_.Add(FrameElement::MemoryElement(NumberInfo::Unknown()));
   }
   for (int i = 0; i < RegisterAllocator::kNumRegisters; i++) {
     register_locations_[i] = kIllegalIndex;
@@ -65,7 +65,7 @@
 }
 
 
-void VirtualFrame::Push(Register reg, NumberInfo::Type info) {
+void VirtualFrame::Push(Register reg, NumberInfo info) {
   if (is_used(reg)) {
     int index = register_location(reg);
     FrameElement element = CopyElementAt(index, info);