Client-based geolocation support.

chrome/browser/geolocation/geolocation_permission_context.cc

Index: chrome/browser/geolocation/geolocation_permission_context.cc
diff --git a/chrome/browser/geolocation/geolocation_permission_context.cc b/chrome/browser/geolocation/geolocation_permission_context.cc
index 31fcdb81505eb3a5493dae809c0ca9e788c9d9b6..16dc51b2c887100293ecb6bbc993295f5681b606 100644
--- a/chrome/browser/geolocation/geolocation_permission_context.cc
+++ b/chrome/browser/geolocation/geolocation_permission_context.cc
@@ -440,6 +440,12 @@ void GeolocationPermissionContext::StartUpdatingRequested(
   // Note we cannot store the arbitrator as a member as it is not thread safe.
   GeolocationProvider* provider = GeolocationProvider::GetInstance();
 
+#if defined(ENABLE_CLIENT_BASED_GEOLOCATION)
+  // Client-based Geolocation uses a preemptive permission model, so permission
+  // ought to have been requested and granted before the controller requests
+  // requests the client to start updating.
+  DCHECK(provider->HasPermissionBeenGranted());
+#else
   // WebKit will not request permission until it has received a valid
   // location, but the google network location provider will not give a
   // valid location until the user has granted permission. So we cut the Gordian
@@ -449,11 +455,14 @@ void GeolocationPermissionContext::StartUpdatingRequested(
     RequestGeolocationPermission(render_process_id, render_view_id, bridge_id,
                                  requesting_frame);
   }
+#endif
 }
 
 void GeolocationPermissionContext::StopUpdatingRequested(
     int render_process_id, int render_view_id, int bridge_id) {
+#if !defined(ENABLE_CLIENT_BASED_GEOLOCATION)
   CancelPendingInfoBarRequest(render_process_id, render_view_id, bridge_id);
+#endif
 }
 
 void GeolocationPermissionContext::NotifyPermissionSet(