Make the NaCl windows 64 bit binaries not depend on chrome targets.

chrome/nacl/nacl_listener.h

Index: chrome/nacl/nacl_listener.h
===================================================================
--- chrome/nacl/nacl_listener.h	(revision 100721)
+++ chrome/nacl/nacl_listener.h	(working copy)
@@ -15,17 +15,19 @@
 // request to start a NaCl module.
 class NaClListener : public IPC::Channel::Listener {
  public:
-  explicit NaClListener();
+  NaClListener();
   virtual ~NaClListener();
   // Listen for a request to launch a NaCl module.
   void Listen();
   void set_debug_enabled(bool value) {debug_enabled_ = value;}
+
  private:
-  bool debug_enabled_;
   void OnStartSelLdr(std::vector<nacl::FileDescriptor> handles,
                      bool have_irt_file);
   virtual bool OnMessageReceived(const IPC::Message& msg);
 
+  bool debug_enabled_;
+
   DISALLOW_COPY_AND_ASSIGN(NaClListener);
 };