Moving the iOS directory to be remoting top level.

remoting/ios/host_preferences_persistence_chromium.mm

 // 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.
 
-#import "remoting/client/ios/host_preferences_persistence.h"
+#import "remoting/ios/host_preferences_persistence.h"
 
 #import "base/logging.h"
 
 namespace remoting {
 namespace ios {
 
 // TODO(nicholss): It might be useful to save |data| in a static variable,
 // which is then returned from ReadHostPreferencesFromKeychain(). This would
 // allow to test pairing, even though the pairing info is not persisted when
 // the app is restarted.
 
 NSError* WriteHostPreferencesToKeychain(NSData* data) {
   NOTIMPLEMENTED();
   return nil;
 }
 
 NSData* ReadHostPreferencesFromKeychain() {
   NOTIMPLEMENTED();
   return nil;
 }
 
 }  // namespace ios
 }  // namespace remoting