Revert 38207 - bah. still can't work out why this passes fine on local machin...

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
@@ skipping 31 matching lines @@
   };
 
   // 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;
+    virtual bool LocationUpdateAvailable(LocationProviderBase* provider) = 0;
     // Used to inform listener that movement has been detected. If obtaining the
     // position succeeds, this will be followed by a call to
     // LocationUpdateAvailable. Some providers may not be able to detect
     // movement before a new fix is obtained, so will never call this method.
     // Note that this is not called in response to registration of a new
     // listener.
-    virtual void MovementDetected(LocationProviderBase* provider) = 0;
+    virtual bool MovementDetected(LocationProviderBase* provider) = 0;
 
    protected:
     virtual ~ListenerInterface() {}
   };
 
   // TODO(joth): Make register / unregister non-virtual.
   // Registers a listener, which will be called back on
   // ListenerInterface::LocationUpdateAvailable as soon as a position is
   // available and again whenever a new position is available. Ref counts the
   // listener to handle multiple calls to this method.
@@ skipping 65 matching lines @@
 // the platform-dependent implementations.
 LocationProviderBase* NewMockLocationProvider();
 LocationProviderBase* NewGpsLocationProvider();
 LocationProviderBase* NewNetworkLocationProvider(
     LocationProviderBase::AccessTokenStore* access_token_store,
     URLRequestContextGetter* context,
     const GURL& url,
     const string16& host_name);
 
 #endif  // CHROME_BROWSER_GEOLOCATION_LOCATION_PROVIDER_H_