[Sync] Clean up intra-sync DEPS significantly.

components/sync/sessions_impl/sync_session_context.h

 // 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.
 
 // SyncSessionContext encapsulates the contextual information and engine
 // components specific to a SyncSession.  Unlike the SyncSession, the context
 // can be reused across several sync cycles.
 //
 // The context does not take ownership of its pointer members.  It's up to
 // the surrounding classes to ensure those members remain valid while the
 // context is in use.
 //
 // It can only be used from the SyncerThread.
 
 #ifndef COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_CONTEXT_H_
 #define COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_CONTEXT_H_
 
 #include <stdint.h>
 
 #include <string>
 #include <vector>
 
 #include "base/macros.h"
+#include "components/sync/engine_impl/model_type_registry.h"
 #include "components/sync/engine_impl/sync_engine_event_listener.h"
 #include "components/sync/sessions_impl/debug_info_getter.h"
-#include "components/sync/sessions_impl/model_type_registry.h"
 
 namespace syncer {
 
 class ExtensionsActivity;
 class ModelTypeRegistry;
 class ServerConnectionManager;
 
 namespace syncable {
 class Directory;
 }
@@ skipping 147 matching lines @@
   // If there's a cookie jar mismatch, whether the cookie jar was empty or not.
   bool cookie_jar_empty_;
 
   DISALLOW_COPY_AND_ASSIGN(SyncSessionContext);
 };
 
 }  // namespace sessions
 }  // namespace syncer
 
 #endif  // COMPONENTS_SYNC_SESSIONS_IMPL_SYNC_SESSION_CONTEXT_H_