Add a mechanism to pause and resume geolocation requests.

content/public/browser/geolocation_provider.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_PUBLIC_BROWSER_GEOLOCATION_PROVIDER_H_
 #define CONTENT_PUBLIC_BROWSER_GEOLOCATION_PROVIDER_H_
 
 #include "base/callback_forward.h"
 #include "content/common/content_export.h"
 
@@ skipping 37 matching lines @@
   // that serves a fake location.
   //
   // Do not use this function in unit tests. The function instantiates the
   // singleton geolocation stack in the background and manipulates it to report
   // a fake location. Neither step can be undone, breaking unit test isolation
   // (crbug.com/125931).
   static void OverrideLocationForTesting(
       const Geoposition& position,
       const base::Closure& completion_callback);
 
+  // Pauses (or resume any currently paused) location update callbacks.
+  // No-op if there are no active location callbacks. Note that this will
+  // pause (or resume) ALL callbacks for ALL providers. Embderred may like
+  // to use this to pause updates if a device was to go to a temporary
+  // low power mode.
+  virtual void PauseAllLocationUpdateCallbacks() = 0;
+  virtual void ResumeAllLocationUpdateCallbacks() = 0;
+
+
  protected:
   virtual~GeolocationProvider() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_GEOLOCATION_PROVIDER_H_