Get rid of DISALLOW_EVIL_CONSTRUCTORS macro usage in our code base.

net/disk_cache/backend_impl.cc

-// Copyright (c) 2006-2010 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.
 
 #include "net/disk_cache/backend_impl.h"
 
 #include "base/field_trial.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/histogram.h"
 #include "base/message_loop.h"
@@ skipping 65 matching lines @@
 class CleanupTask : public Task {
  public:
   CleanupTask(const FilePath& path, const std::string& name)
       : path_(path), name_(name) {}
 
   virtual void Run();
 
  private:
   FilePath path_;
   std::string name_;
-  DISALLOW_EVIL_CONSTRUCTORS(CleanupTask);
+  DISALLOW_COPY_AND_ASSIGN(CleanupTask);
 };
 
 void CleanupTask::Run() {
   for (int i = 0; i < kMaxOldFolders; i++) {
     FilePath to_delete = GetPrefixedName(path_, name_, i);
     disk_cache::DeleteCache(to_delete, true);
   }
 }
 
 // Returns a full path to rename the current cache, in order to delete it. path
@@ skipping 1601 matching lines @@
 
   return num_dirty;
 }
 
 bool BackendImpl::CheckEntry(EntryImpl* cache_entry) {
   RankingsNode* rankings = cache_entry->rankings()->Data();
   return !rankings->dummy;
 }
 
 }  // namespace disk_cache