Work on heap and space initialization to support image loading

Change-Id: Icab25efa4dee17e4b6c6e97e38f63f5ab8a8a005
diff --git a/src/mark_stack.h b/src/mark_stack.h
index 38252c2..79026cc 100644
--- a/src/mark_stack.h
+++ b/src/mark_stack.h
@@ -14,7 +14,7 @@
 
 class MarkStack {
  public:
-  static MarkStack* Create(size_t maximum_size);
+  static MarkStack* Create();
 
   ~MarkStack();
 
@@ -41,7 +41,7 @@
       base_(NULL), limit_(NULL), ptr_(NULL) {
   }
 
-  bool Init(size_t maximum_size);
+  bool Init();
 
   // Memory mapping of the mark stack.
   scoped_ptr<MemMap> mem_map_;