Checks to see if the position is valid before OnLocationUpdate call.

blimp/client/core/geolocation/geolocation_feature.cc

Index: blimp/client/core/geolocation/geolocation_feature.cc
diff --git a/blimp/client/core/geolocation/geolocation_feature.cc b/blimp/client/core/geolocation/geolocation_feature.cc
index 201a9a0eca4a9037471cda4692ad8a023a8ed837..012e0fdce8f8c040270bf8b1816249bfd34887e2 100644
--- a/blimp/client/core/geolocation/geolocation_feature.cc
+++ b/blimp/client/core/geolocation/geolocation_feature.cc
@@ -144,9 +144,11 @@ void GeolocationFeature::SendGeolocationErrorMessage(
 void GeolocationFeature::OnSendComplete(int result) {
   am_sending_message_ = false;
   if (need_to_send_message_) {
+    device::Geoposition new_position = location_provider_->GetPosition();
+    if (new_position.Validate()) {
+      OnLocationUpdate(location_provider_.get(), new_position);
+    }
     need_to_send_message_ = false;
-    OnLocationUpdate(location_provider_.get(),
-                     location_provider_->GetPosition());
   }
 }