Changed previews component to be a layered component.

components/previews/core/previews_io_data.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 "components/previews/previews_io_data.h"
+#include "components/previews/core/previews_io_data.h"
 
 #include "base/bind.h"
 #include "base/location.h"
-#include "components/previews/previews_ui_service.h"
+#include "components/previews/core/previews_ui_service.h"
 
 namespace previews {
 
 PreviewsIOData::PreviewsIOData(
     const scoped_refptr<base::SingleThreadTaskRunner>& ui_task_runner,
     const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner)
     : ui_task_runner_(ui_task_runner),
       io_task_runner_(io_task_runner),
       weak_factory_(this) {}
 
@@ skipping 11 matching lines @@
 }
 
 void PreviewsIOData::InitializeOnIOThread() {
   DCHECK(io_task_runner_->BelongsToCurrentThread());
   ui_task_runner_->PostTask(
       FROM_HERE, base::Bind(&PreviewsUIService::SetIOData, previews_ui_service_,
                             weak_factory_.GetWeakPtr()));
 }
 
 }  // namespace previews