Add ENABLE_DEBUGGER_SUPPORT macro....

src/assembler.h

Index: src/assembler.h
===================================================================
--- src/assembler.h	(revision 1738)
+++ src/assembler.h	(working copy)
@@ -346,8 +346,10 @@
 
 //----------------------------------------------------------------------------
 class IC_Utility;
+class SCTableReference;
+#ifdef ENABLE_DEBUGGER_SUPPORT
 class Debug_Address;
-class SCTableReference;
+#endif
 
 // An ExternalReference represents a C++ address called from the generated
 // code. All references to C++ functions and must be encapsulated in an
@@ -365,7 +367,9 @@
 
   explicit ExternalReference(const IC_Utility& ic_utility);
 
+#ifdef ENABLE_DEBUGGER_SUPPORT
   explicit ExternalReference(const Debug_Address& debug_address);
+#endif
 
   explicit ExternalReference(StatsCounter* counter);
 
@@ -388,9 +392,6 @@
   // Static variable RegExpStack::limit_address()
   static ExternalReference address_of_regexp_stack_limit();
 
-  // Function Debug::Break()
-  static ExternalReference debug_break();
-
   // Static variable Heap::NewSpaceStart()
   static ExternalReference new_space_start();
   static ExternalReference heap_always_allocate_scope_depth();
@@ -399,13 +400,18 @@
   static ExternalReference new_space_allocation_top_address();
   static ExternalReference new_space_allocation_limit_address();
 
-  // Used to check if single stepping is enabled in generated code.
-  static ExternalReference debug_step_in_fp_address();
-
   static ExternalReference double_fp_operation(Token::Value operation);
 
   Address address() const {return address_;}
 
+#ifdef ENABLE_DEBUGGER_SUPPORT
+  // Function Debug::Break()
+  static ExternalReference debug_break();
+
+  // Used to check if single stepping is enabled in generated code.
+  static ExternalReference debug_step_in_fp_address();
+#endif
+
  private:
   explicit ExternalReference(void* address)
     : address_(reinterpret_cast<Address>(address)) {}