Remove unused fields from //content.

content/browser/leveldb_wrapper_impl.cc

 // Copyright 2016 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 "content/browser/leveldb_wrapper_impl.h"
 
 #include "base/bind.h"
 #include "mojo/common/common_type_converters.h"
 
 namespace content {
 
 LevelDBWrapperImpl::LevelDBWrapperImpl(
-    leveldb::LevelDBDatabase* database,
     const std::string& prefix,
     size_t max_size,
     const base::Closure& no_bindings_callback)
     : prefix_(prefix),
       no_bindings_callback_(no_bindings_callback),
-      database_(database),
       bytes_used_(0),
       max_size_(max_size) {
   bindings_.set_connection_error_handler(base::Bind(
       &LevelDBWrapperImpl::OnConnectionError, base::Unretained(this)));
 }
 
 void LevelDBWrapperImpl::Bind(mojom::LevelDBWrapperRequest request) {
   bindings_.AddBinding(this, std::move(request));
 }
 
@@ skipping 104 matching lines @@
 }
 
 void LevelDBWrapperImpl::OnConnectionError() {
   if (!bindings_.empty())
     return;
 
   no_bindings_callback_.Run();
 }
 
 }  // namespace content