Factor out common code from platform-specific deoptimization. Fix Deoptimizer not to need to partit…

src/objects.h

Index: src/objects.h
diff --git a/src/objects.h b/src/objects.h
index b09e9d556d4b98b9a3cd74ee013ef2addf2ad02d..a085d36c258a7ff1ece9966005f25c96d3819806 100644
--- a/src/objects.h
+++ b/src/objects.h
@@ -4563,8 +4563,6 @@ class Code: public HeapObject {
   inline void InitializeTypeFeedbackInfoNoWriteBarrier(Object* value);
   inline int stub_info();
   inline void set_stub_info(int info);
-  inline Object* deoptimizing_functions();
-  inline void set_deoptimizing_functions(Object* value);
 
   // [gc_metadata]: Field used to hold GC related metadata. The contents of this
   // field does not have to be traced during garbage collection since
@@ -6755,18 +6753,6 @@ class JSFunction: public JSObject {
   // Retrieve the native context from a function's literal array.
   static Context* NativeContextFromLiterals(FixedArray* literals);
 
-#ifdef DEBUG
-  bool FunctionsInFunctionListShareSameCode() {
-    Object* current = this;
-    while (!current->IsUndefined()) {
-      JSFunction* function = JSFunction::cast(current);
-      current = function->next_function_link();
-      if (function->code() != this->code()) return false;
-    }
-    return true;
-  }
-#endif
-
   bool PassesHydrogenFilter();
 
   // Layout descriptors. The last property (from kNonWeakFieldsEndOffset to