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

sync/sessions/sync_session_context.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.
 
 // SyncSessionContext encapsulates the contextual information and engine
 // components specific to a SyncSession. A context is accessible via
 // a SyncSession so that session SyncerCommands and parts of the engine have
 // a convenient way to access other parts. In this way it can be thought of as
 // the surrounding environment for the SyncSession. The components of this
 // environment are either valid or not valid for the entire context lifetime,
@@ skipping 12 matching lines @@
 #include <string>
 #include <vector>
 
 #include "base/time.h"
 #include "sync/engine/sync_engine_event.h"
 #include "sync/engine/syncer_types.h"
 #include "sync/engine/traffic_recorder.h"
 #include "sync/internal_api/public/engine/model_safe_worker.h"
 #include "sync/sessions/debug_info_getter.h"
 
-namespace syncable {
-class Directory;
-}
-
 namespace syncer {
 
 class ConflictResolver;
 class ExtensionsActivityMonitor;
 class ServerConnectionManager;
 class ThrottledDataTypeTracker;
 
+namespace syncable {
+class Directory;
+}
+
 // Default number of items a client can commit in a single message.
 static const int kDefaultMaxCommitBatchSize = 25;
 
 namespace sessions {
 class ScopedSessionContextConflictResolver;
 class TestScopedSessionEventListener;
 
 class SyncSessionContext {
  public:
   SyncSessionContext(ServerConnectionManager* connection_manager,
@@ skipping 145 matching lines @@
  private:
   SyncSessionContext* context_;
   ConflictResolver* resolver_;
   DISALLOW_COPY_AND_ASSIGN(ScopedSessionContextConflictResolver);
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // SYNC_SESSIONS_SYNC_SESSION_CONTEXT_H_