[CRD iOS] Add the host setup instruction page

remoting/ios/app/host_setup_view_cell.h

Index: remoting/ios/app/host_setup_view_cell.h
diff --git a/remoting/ios/app/host_setup_view_cell.h b/remoting/ios/app/host_setup_view_cell.h
new file mode 100644
index 0000000000000000000000000000000000000000..a6bc7e322df4dbf590c240d59e71a316d67c1304
--- /dev/null
+++ b/remoting/ios/app/host_setup_view_cell.h
@@ -0,0 +1,17 @@
+// Copyright 2017 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 REMOTING_IOS_APP_HOST_SETUP_VIEW_CELL_H_
+#define REMOTING_IOS_APP_HOST_SETUP_VIEW_CELL_H_
+
+#import <UIKit/UIKit.h>
+
+// The collection cell for each step when setting up the host.
+@interface HostSetupViewCell : UICollectionViewCell
+
+- (void)setContentText:(NSString*)text number:(NSInteger)number;
+
+@end
+
+#endif  // REMOTING_IOS_APP_HOST_SETUP_VIEW_CELL_H_