Get rid of DISALLOW_EVIL_CONSTRUCTORS macro usage in our code base.

net/disk_cache/rankings.h

Index: net/disk_cache/rankings.h
diff --git a/net/disk_cache/rankings.h b/net/disk_cache/rankings.h
index c9fc8d293b0f85311bfc6a663dc4a39c980505fb..f635355da7e774c31e863db6cb11b2992de2e77d 100644
--- a/net/disk_cache/rankings.h
+++ b/net/disk_cache/rankings.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -86,7 +86,7 @@ class Rankings {
 
    private:
     Rankings* rankings_;
-    DISALLOW_EVIL_CONSTRUCTORS(ScopedRankingsBlock);
+    DISALLOW_COPY_AND_ASSIGN(ScopedRankingsBlock);
   };
 
   // If we have multiple lists, we have to iterate through all at the same time.