[Sync] Move sync/{internal_api,syncable} into syncer namespace

sync/engine/build_commit_command.h

 // Copyright (c) 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.
 
 #ifndef SYNC_ENGINE_BUILD_COMMIT_COMMAND_H_
 #define SYNC_ENGINE_BUILD_COMMIT_COMMAND_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "sync/engine/syncer_command.h"
 #include "sync/engine/syncproto.h"
 #include "sync/syncable/entry_kernel.h"
 
-namespace syncable {
-class Entry;
-}
-
 namespace syncer {
 
 namespace sessions {
 class OrderedCommitSet;
 }
 
+namespace syncable {
+class Entry;
+}
+
 // A class that contains the code used to serialize a set of sync items into a
 // protobuf commit message.  This conversion process references the
 // syncable::Directory, which is why it must be called within the same
 // transaction as the GetCommitIdsCommand that fetched the set of items to be
 // committed.
 //
 // See SyncerCommand documentation for more info.
 class BuildCommitCommand : public SyncerCommand {
  public:
   // The batch_commit_set parameter contains a set of references to the items
@@ skipping 34 matching lines @@
   // Input parameter; see constructor comment.
   const sessions::OrderedCommitSet& batch_commit_set_;
 
   // Output parameter; see constructor comment.
   ClientToServerMessage* commit_message_;
 };
 
 }  // namespace syncer
 
 #endif  // SYNC_ENGINE_BUILD_COMMIT_COMMAND_H_