Cleanup: Remove the implicit constructor for BoundNetLog that allowed passing...

net/base/net_log.h

Index: net/base/net_log.h
===================================================================
--- net/base/net_log.h	(revision 45843)
+++ net/base/net_log.h	(working copy)
@@ -137,11 +137,6 @@
  public:
   BoundNetLog() : net_log_(NULL) {}
 
-  // TODO(eroman): This is a complete hack to allow passing in NULL in
-  // place of a BoundNetLog. I added this while refactoring to simplify the
-  // task of updating all the callers.
-  BoundNetLog(uint32) : net_log_(NULL) {}
-
   BoundNetLog(const NetLog::Source& source, NetLog* net_log)
       : source_(source), net_log_(net_log) {
   }