Add a mechanism to pause and resume geolocation requests.

content/browser/geolocation/location_arbitrator.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.
 
 #ifndef CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_H_
 #define CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_H_
 
 #include "content/common/content_export.h"
 
 namespace content {
 
 // This class is responsible for handling updates from multiple underlying
 // providers and resolving them to a single 'best' location fix at any given
 // moment.
 class CONTENT_EXPORT LocationArbitrator {
 public:
   virtual ~LocationArbitrator() {};
 
   // See more details in geolocation_provider.
   virtual void StartProviders(bool use_high_accuracy) = 0;
   virtual void StopProviders() = 0;
+  virtual void PauseProviders() = 0;
+  virtual void ResumeProviders() = 0;
 
   // Called everytime permission is granted to a page for using geolocation.
   // This may either be through explicit user action (e.g. responding to the
   // infobar prompt) or inferred from a persisted site permission.
   // The arbitrator will inform all providers of this, which may in turn use
   // this information to modify their internal policy.
   virtual void OnPermissionGranted() = 0;
 
   // Returns true if this arbitrator has received at least one call to
   // OnPermissionGranted().
   virtual bool HasPermissionBeenGranted() const = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_GEOLOCATION_LOCATION_ARBITRATOR_IMPL_H_