Revert of Reland of "Remove void** from disk_cache interface."

net/http/mock_http_cache.cc

Index: net/http/mock_http_cache.cc
diff --git a/net/http/mock_http_cache.cc b/net/http/mock_http_cache.cc
index cbae9b80b9335487fb6cebe72a0a3e92a26810c4..a91b2c1aa83107c737b67aa40ab064b1ef44f1f3 100644
--- a/net/http/mock_http_cache.cc
+++ b/net/http/mock_http_cache.cc
@@ -457,16 +457,12 @@
   return net::ERR_NOT_IMPLEMENTED;
 }
 
-class MockDiskCache::NotImplementedIterator : public Iterator {
- public:
-  virtual int OpenNextEntry(disk_cache::Entry** next_entry,
-                            const net::CompletionCallback& callback) OVERRIDE {
-    return net::ERR_NOT_IMPLEMENTED;
-  }
-};
-
-scoped_ptr<disk_cache::Backend::Iterator> MockDiskCache::CreateIterator() {
-  return scoped_ptr<Iterator>(new NotImplementedIterator());
+int MockDiskCache::OpenNextEntry(void** iter, disk_cache::Entry** next_entry,
+                                 const net::CompletionCallback& callback) {
+  return net::ERR_NOT_IMPLEMENTED;
+}
+
+void MockDiskCache::EndEnumeration(void** iter) {
 }
 
 void MockDiskCache::GetStats(