Fix some grammatical errors in comments in net/

net/cookies/cookie_monster.cc

 // Copyright (c) 2012 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.
 
 // Portions of this code based on Mozilla:
 //   (netwerk/cookie/src/nsCookieService.cpp)
 /* ***** BEGIN LICENSE BLOCK *****
  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
  *
  * The contents of this file are subject to the Mozilla Public License Version
@@ skipping 2649 matching lines @@
 bool CookieMonster::CanonicalCookie::IsOnPath(
     const std::string& url_path) const {
 
   // A zero length would be unsafe for our trailing '/' checks, and
   // would also make no sense for our prefix match.  The code that
   // creates a CanonicalCookie should make sure the path is never zero length,
   // but we double check anyway.
   if (path_.empty())
     return false;
 
-  // The Mozilla code broke it into 3 cases, if it's strings lengths
-  // are less than, equal, or greater.  I think this is simpler:
+  // The Mozilla code broke this into three cases, based on if the cookie path
+  // was longer, the same length, or shorter than the length of the url path.
+  // I think the approach below is simpler.
 
   // Make sure the cookie path is a prefix of the url path.  If the
   // url path is shorter than the cookie path, then the cookie path
   // can't be a prefix.
   if (url_path.find(path_) != 0)
     return false;
 
   // Now we know that url_path is >= cookie_path, and that cookie_path
   // is a prefix of url_path.  If they are the are the same length then
   // they are identical, otherwise we need an additional check:
@@ skipping 49 matching lines @@
 std::string CookieMonster::CanonicalCookie::DebugString() const {
   return base::StringPrintf(
       "name: %s value: %s domain: %s path: %s creation: %"
       PRId64,
       name_.c_str(), value_.c_str(),
       domain_.c_str(), path_.c_str(),
       static_cast<int64>(creation_date_.ToTimeT()));
 }
 
 }  // namespace