[Sync] Removing duplicated includes between cc and h files.

components/sync/syncable/directory_backing_store.cc

 // Copyright 2012 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 "components/sync/syncable/directory_backing_store.h"
 
 #include <stddef.h>
-#include <stdint.h>
 
 #include <limits>
 #include <unordered_set>
 
 #include "base/base64.h"
 #include "base/location.h"
 #include "base/logging.h"
-#include "base/macros.h"
 #include "base/metrics/histogram_macros.h"
 #include "base/rand_util.h"
 #include "base/single_thread_task_runner.h"
 #include "base/strings/stringprintf.h"
 #include "base/threading/thread_task_runner_handle.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "components/sync/base/node_ordinal.h"
 #include "components/sync/base/time.h"
 #include "components/sync/protocol/bookmark_specifics.pb.h"
 #include "components/sync/protocol/sync.pb.h"
 #include "components/sync/syncable/syncable_columns.h"
 #include "components/sync/syncable/syncable_id.h"
 #include "components/sync/syncable/syncable_util.h"
-#include "sql/connection.h"
 #include "sql/error_delegate_util.h"
-#include "sql/statement.h"
 #include "sql/transaction.h"
 
 using std::string;
 
 namespace syncer {
 namespace syncable {
 
 // Increment this version whenever updating DB tables.
 const int32_t kCurrentDBVersion = 90;
 
@@ skipping 1720 matching lines @@
   DCHECK(CalledOnValidThread());
   DCHECK(!catastrophic_error_handler.is_null());
   catastrophic_error_handler_ = catastrophic_error_handler;
   sql::Connection::ErrorCallback error_callback =
       base::Bind(&OnSqliteError, catastrophic_error_handler_);
   db_->set_error_callback(error_callback);
 }
 
 }  // namespace syncable
 }  // namespace syncer