Move all components/offline_pages/ files into component/offline_pages/core

components/offline_pages/core/background/network_quality_provider_stub.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 COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
-#define COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
+#ifndef COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
+#define COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
 
 #include "base/supports_user_data.h"
 #include "net/nqe/effective_connection_type.h"
 #include "net/nqe/network_quality_estimator.h"
 
 namespace offline_pages {
 
 // Test class stubbing out the functionality of NQE::NetworkQualityProvider.
 // It is only used for test support.
 class NetworkQualityProviderStub
@@ skipping 21 matching lines @@
   void SetEffectiveConnectionTypeForTest(net::EffectiveConnectionType type) {
     connection_type_ = type;
   }
 
  private:
   net::EffectiveConnectionType connection_type_;
 };
 
 }  // namespace offline_pages
 
-#endif  // COMPONENTS_OFFLINE_PAGES_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_
+#endif  // COMPONENTS_OFFLINE_PAGES_CORE_BACKGROUND_NETWORK_QUALITY_PROVIDER_STUB_H_