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

content/public/browser/access_token_store.h

-// Copyright (c) 2012 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.
-
-// Defines the Geolocation access token store, and associated factory function.
-// An access token store is responsible for providing the API to persist
-// access tokens, one at a time, and to load them back on mass.
-// The API is a little more complex than one might wish, due to the need for
-// prefs access to happen asynchronously on the UI thread.
-// This API is provided as abstract base classes to allow mocking and testing
-// of clients, without dependency on browser process singleton objects etc.
-
-#ifndef CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_
-#define CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_
-
-#include <map>
-
-#include "base/callback.h"
-#include "base/memory/ref_counted.h"
-#include "base/strings/string16.h"
-#include "content/common/content_export.h"
-#include "net/url_request/url_request_context_getter.h"
-#include "url/gurl.h"
-
-class GURL;
-
-namespace content {
-
-// Provides storage for the access token used in the network request.
-class AccessTokenStore : public base::RefCountedThreadSafe<AccessTokenStore> {
- public:
-  // Map of server URLs to associated access token.
-  typedef std::map<GURL, base::string16> AccessTokenMap;
-  typedef base::Callback<
-      void(AccessTokenMap, const scoped_refptr<net::URLRequestContextGetter>&)>
-      LoadAccessTokensCallback;
-
-  // |callback| will be invoked once per LoadAccessTokens call, after existing
-  // access tokens have been loaded from persistent store. As a convenience the
-  // URLRequestContextGetter is also supplied as an argument in |callback|, as
-  // in Chrome the call to obtain this must also be performed on the UI thread
-  // so it is efficient to piggyback it onto this request.
-  virtual void LoadAccessTokens(const LoadAccessTokensCallback& callback) = 0;
-
-  virtual void SaveAccessToken(
-      const GURL& server_url, const base::string16& access_token) = 0;
-
- protected:
-  friend class base::RefCountedThreadSafe<AccessTokenStore>;
-  CONTENT_EXPORT AccessTokenStore() {}
-  CONTENT_EXPORT virtual ~AccessTokenStore() {}
-};
-
-}  // namespace content
-
-#endif  // CONTENT_PUBLIC_BROWSER_ACCESS_TOKEN_STORE_H_