Merge flush code phase into marking phase.

src/frames.cc

Index: src/frames.cc
diff --git a/src/frames.cc b/src/frames.cc
index bdd5100ed864da8d13d22fa3b26bb6fe3cefb345..9f815c39b13f9fa717feb8f2ea727d05ec5d6aa9 100644
--- a/src/frames.cc
+++ b/src/frames.cc
@@ -372,8 +372,8 @@ StackFrame::Type StackFrame::GetCallerState(State* state) const {
 }
 
 
-Code* EntryFrame::code() const {
-  return Heap::js_entry_code();
+Code* EntryFrame::unchecked_code() const {
+  return Heap::raw_unchecked_js_entry_code();
 }
 
 
@@ -395,8 +395,8 @@ StackFrame::Type EntryFrame::GetCallerState(State* state) const {
 }
 
 
-Code* EntryConstructFrame::code() const {
-  return Heap::js_construct_entry_code();
+Code* EntryConstructFrame::unchecked_code() const {
+  return Heap::raw_unchecked_js_construct_entry_code();
 }
 
 
@@ -406,8 +406,8 @@ Object*& ExitFrame::code_slot() const {
 }
 
 
-Code* ExitFrame::code() const {
-  return Code::cast(code_slot());
+Code* ExitFrame::unchecked_code() const {
+  return reinterpret_cast<Code*>(code_slot());
 }
 
 
@@ -493,22 +493,22 @@ bool JavaScriptFrame::IsConstructor() const {
 }
 
 
-Code* JavaScriptFrame::code() const {
+Code* JavaScriptFrame::unchecked_code() const {
   JSFunction* function = JSFunction::cast(this->function());
-  return function->shared()->code();
+  return function->unchecked_code();
 }
 
 
-Code* ArgumentsAdaptorFrame::code() const {
+Code* ArgumentsAdaptorFrame::unchecked_code() const {
   return Builtins::builtin(Builtins::ArgumentsAdaptorTrampoline);
 }
 
 
-Code* InternalFrame::code() const {
+Code* InternalFrame::unchecked_code() const {
   const int offset = InternalFrameConstants::kCodeOffset;
   Object* code = Memory::Object_at(fp() + offset);
   ASSERT(code != NULL);
-  return Code::cast(code);
+  return reinterpret_cast<Code*>(code);
 }