Get rid of DISALLOW_EVIL_CONSTRUCTORS macro usage in our code base.

net/disk_cache/storage_block.h

Index: net/disk_cache/storage_block.h
diff --git a/net/disk_cache/storage_block.h b/net/disk_cache/storage_block.h
index 0d94b8241288aa35208ad25df27960c09f9f3136..e77c5bbbf321c03d381a54e0ee8b4d5778b20dca 100644
--- a/net/disk_cache/storage_block.h
+++ b/net/disk_cache/storage_block.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.
 
@@ -82,7 +82,7 @@ class StorageBlock : public FileBlock {
   bool own_data_;  // Is data_ owned by this object or shared with someone else.
   bool extended_;  // Used to store an entry of more than one block.
 
-  DISALLOW_EVIL_CONSTRUCTORS(StorageBlock);
+  DISALLOW_COPY_AND_ASSIGN(StorageBlock);
 };
 
 typedef StorageBlock<EntryStore> CacheEntryBlock;