Add support for top level geolocation arbitrator, and access token persistenc...

chrome/browser/geolocation/location_provider.h

 // Copyright (c) 2010 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.
 
 // A location provider provides position information from a particular source
 // (GPS, network etc). The GearsGeolocation object uses a set of location
 // providers to obtain a position fix.
 //
 // This file declares a base class to be used by all location providers.
 // Primarily, this class declares interface methods to be implemented by derived
 // classes.
 
 #ifndef CHROME_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_
 #define CHROME_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_
 
 #include <map>
 #include "base/non_thread_safe.h"
 #include "base/string16.h"
 
+class AccessTokenStore;
 class GURL;
+class URLRequestContextGetter;
 struct Position;
-class URLRequestContextGetter;
 
 // The base class used by all location providers.
 class LocationProviderBase : public NonThreadSafe {
  public:
-  // Provides storage for the access token used in the network request.
-  // Normally the client (i.e. geolocation controller) implements this, but
-  // also allows mocking for testing.
-  class AccessTokenStore {
-   public:
-    virtual bool SetAccessToken(const GURL& url,
-                                const string16& access_token) = 0;
-    virtual bool GetAccessToken(const GURL& url, string16* access_token) = 0;
-
-   protected:
-    virtual ~AccessTokenStore() {}
-  };
-
   // Clients of the location provider must implement this interface. All call-
   // backs to this interface will happen in the context of the thread on which
   // the location provider was created.
   class ListenerInterface {
    public:
     // Used to inform listener that a new position fix is available or that a
     // fatal error has occurred. Providers should call this for new listeners
     // as soon as a position is available.
     virtual void LocationUpdateAvailable(LocationProviderBase* provider) = 0;
     // Used to inform listener that movement has been detected. If obtaining the
@@ skipping 47 matching lines @@
   // ref count.
   typedef std::map<ListenerInterface*, int> ListenerMap;
   ListenerMap listeners_;
 };
 
 // Factory functions for the various types of location provider to abstract over
 // the platform-dependent implementations.
 LocationProviderBase* NewMockLocationProvider();
 LocationProviderBase* NewGpsLocationProvider();
 LocationProviderBase* NewNetworkLocationProvider(
-    LocationProviderBase::AccessTokenStore* access_token_store,
+    AccessTokenStore* access_token_store,
     URLRequestContextGetter* context,
     const GURL& url,
     const string16& host_name);
 
 #endif  // CHROME_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_