Get rid of DISALLOW_EVIL_CONSTRUCTORS macro usage in our code base.

net/disk_cache/backend_impl.h

Index: net/disk_cache/backend_impl.h
diff --git a/net/disk_cache/backend_impl.h b/net/disk_cache/backend_impl.h
index 6267facd8efab7507a1dfa79bb633016f1b0c9b4..58d81eb38a9a8925d88b1c621abcc450cd81e2f8 100644
--- a/net/disk_cache/backend_impl.h
+++ b/net/disk_cache/backend_impl.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.
 
@@ -303,7 +303,7 @@ class BackendImpl : public Backend {
   scoped_refptr<TraceObject> trace_object_;  // Inits internal tracing.
   ScopedRunnableMethodFactory<BackendImpl> factory_;
 
-  DISALLOW_EVIL_CONSTRUCTORS(BackendImpl);
+  DISALLOW_COPY_AND_ASSIGN(BackendImpl);
 };
 
 // Returns the prefered max cache size given the available disk space.