Reland 2:Geolocation: move from content/browser to device/

content/public/browser/geolocation_delegate.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 CONTENT_PUBLIC_BROWSER_GEOLOCATION_DELEGATE_H_
-#define CONTENT_PUBLIC_BROWSER_GEOLOCATION_DELEGATE_H_
-
-#include <memory>
-
-#include "base/memory/ref_counted.h"
-#include "content/common/content_export.h"
-
-namespace content {
-class AccessTokenStore;
-class LocationProvider;
-
-// An embedder of Geolocation may override these class' methods to provide
-// specific functionality.
-class CONTENT_EXPORT GeolocationDelegate {
- public:
-  virtual ~GeolocationDelegate() {}
-
-  // Returns true if the location API should use network-based location
-  // approximation in addition to the system provider, if any.
-  virtual bool UseNetworkLocationProviders();
-
-  // Creates a new AccessTokenStore for geolocation. May return nullptr.
-  virtual scoped_refptr<AccessTokenStore> CreateAccessTokenStore();
-
-  // Allows an embedder to return its own LocationProvider implementation.
-  // Return nullptr to use the default one for the platform to be created.
-  // FYI: Used by an external project; please don't remove. Contact Viatcheslav
-  // Ostapenko at sl.ostapenko@samsung.com for more information.
-  virtual std::unique_ptr<LocationProvider> OverrideSystemLocationProvider();
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_GEOLOCATION_DELEGATE_H_