Add a mechanism to pause and resume geolocation requests.

content/port/browser/location_provider.h

Index: content/port/browser/location_provider.h
diff --git a/content/port/browser/location_provider.h b/content/port/browser/location_provider.h
index 0dc61ef05a2c1a1b801f2ebf2cee54e263897767..c8704d0df0268d89d4b6a08841b80a7481993777 100644
--- a/content/port/browser/location_provider.h
+++ b/content/port/browser/location_provider.h
@@ -39,6 +39,12 @@ class LocationProvider {
   // network requests can be done until OnPermissionGranted() has been called.
   virtual void StopProvider() = 0;
 
+  // The LocationProvider implementation may use the Pause/ResumeProvider API
+  // to temporarily stop this provider from firing updates. By default, these
+  // APIs are a no-op.
+  virtual void PauseProvider() = 0;
+  virtual void ResumeProvider() = 0;
+
   // Gets the current best position estimate.
   virtual void GetPosition(Geoposition* position) = 0;