Deprecate obsolete JSFunction::unchecked_shared accessor.

R=hpayer@chromium.org
BUG=v8:1490

Review URL: https://codereview.chromium.org/16813005

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15086 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/mark-compact.cc

@@ -2418,7 +2418,7 @@ void MarkCompactCollector::ClearNonLiveReferences() {
       // This map is used for inobject slack tracking and has been detached
       // from SharedFunctionInfo during the mark phase.
       // Since it survived the GC, reattach it now.
-      map->unchecked_constructor()->unchecked_shared()->AttachInitialMap(map);
+      map->unchecked_constructor()->shared()->AttachInitialMap(map);
     }
 
     ClearNonLivePrototypeTransitions(map);

src/objects-inl.h

@@ -4969,12 +4969,6 @@ Object* JSFunction::unchecked_context() {
 }
 
 
-SharedFunctionInfo* JSFunction::unchecked_shared() {
-  return reinterpret_cast<SharedFunctionInfo*>(
-      READ_FIELD(this, kSharedFunctionInfoOffset));
-}
-
-
 void JSFunction::set_context(Object* value) {
   ASSERT(value->IsUndefined() || value->IsContext());
   WRITE_FIELD(this, kContextOffset, value);

src/objects-visiting-inl.h

@@ -414,7 +414,7 @@ void StaticMarkingVisitor<StaticVisitor>::VisitJSFunction(
       // Visit shared function info immediately to avoid double checking
       // of its flushability later. This is just an optimization because
       // the shared function info would eventually be visited.
-      SharedFunctionInfo* shared = function->unchecked_shared();
+      SharedFunctionInfo* shared = function->shared();
       if (StaticVisitor::MarkObjectWithoutPush(heap, shared)) {
         StaticVisitor::MarkObject(heap, shared->map());
         VisitSharedFunctionInfoWeakCode(heap, shared);
@@ -595,7 +595,7 @@ inline static bool HasSourceCode(Heap* heap, SharedFunctionInfo* info) {
 template<typename StaticVisitor>
 bool StaticMarkingVisitor<StaticVisitor>::IsFlushable(
     Heap* heap, JSFunction* function) {
-  SharedFunctionInfo* shared_info = function->unchecked_shared();
+  SharedFunctionInfo* shared_info = function->shared();
 
   // Code is either on stack, in compilation cache or referenced
   // by optimized version of function.

src/objects.h

@@ -6581,8 +6581,6 @@ class JSFunction: public JSObject {
   // can be shared by instances.
   DECL_ACCESSORS(shared, SharedFunctionInfo)
 
-  inline SharedFunctionInfo* unchecked_shared();
-
   // [context]: The context for this function.
   inline Context* context();
   inline Object* unchecked_context();