Rename the net_internals file names to include hyphens.

chrome/browser/resources/net_internals/log_grouper.js

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * LogGroupEntry is a wrapper around log entries, which makes it easier to
  * find the corresponding start/end of events.
  *
  * This is used internally by the log and timeline views to pretty print
  * collections of log entries.
@@ skipping 73 matching lines @@
     // Inherit the current parent.
     if (parentStack.length > 0)
       groupEntry.parentEntry = parentStack[parentStack.length - 1];
 
     if (groupEntry.isBegin())
       parentStack.push(groupEntry);
   }
 
   return groupedEntries;
 }