Break up common_custom_types.mojom.

services/preferences/public/cpp/pref_observer_store.h

 // 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.
 
 #ifndef SERVICES_PREFERENCES_PUBLIC_CPP_PREFS_OBSERVER_STORE_H_
 #define SERVICES_PREFERENCES_PUBLIC_CPP_PREFS_OBSERVER_STORE_H_
 
 #include <set>
 
 #include "base/macros.h"
 #include "components/prefs/value_map_pref_store.h"
-#include "mojo/common/common_custom_types.mojom.h"
 #include "mojo/public/cpp/bindings/binding.h"
 #include "services/preferences/public/interfaces/preferences.mojom.h"
 
 namespace shell {
 class Connector;
 }
 
 class PrefObserverStoreTest;
 
 // An implementation of PrefStore which uses prefs::mojom::PreferenceManager as
@@ skipping 50 matching lines @@
 
   std::set<std::string> keys_;
 
   // True upon the first OnPreferencesChanged received after Init.
   bool initialized_;
 
   DISALLOW_COPY_AND_ASSIGN(PrefObserverStore);
 };
 
 #endif  // SERVICES_PREFERENCES_PUBLIC_CPP_PREFS_OBSERVER_STORE_H_