Merge pull request #1852 from mapbox/update-user-dot-once

refs #1125, 1813: update user dot tracking in one place

Author: incanus

platform/ios/MGLMapView.mm

@@ -688,6 +688,8 @@ - (void)glkView:(__unused GLKView *)view drawInRect:(__unused CGRect)rect
         _mbglMap->setSourceTileCacheSize(cacheSize);
 
         _mbglMap->renderSync();
+
+        [self updateUserLocationAnnotationView];
     }
 }
 
@@ -2351,8 +2353,6 @@ - (void)locationManager:(__unused CLLocationManager *)manager didUpdateToLocatio
 
     self.userLocationAnnotationView.haloLayer.hidden = ! CLLocationCoordinate2DIsValid(self.userLocation.coordinate) ||
         newLocation.horizontalAccuracy > 10;
-
-    [self updateUserLocationAnnotationView];
 }
 
 - (BOOL)locationManagerShouldDisplayHeadingCalibration:(CLLocationManager *)manager
@@ -2509,8 +2509,6 @@ - (void)notifyMapChange:(mbgl::MapChange)change
         case mbgl::MapChangeRegionWillChange:
         case mbgl::MapChangeRegionWillChangeAnimated:
         {
-            [self updateUserLocationAnnotationView];
-
             [self deselectAnnotation:self.selectedAnnotation animated:NO];
 
             BOOL animated = (change == mbgl::MapChangeRegionWillChangeAnimated);
@@ -2545,7 +2543,6 @@ - (void)notifyMapChange:(mbgl::MapChange)change
         }
         case mbgl::MapChangeRegionIsChanging:
         {
-            [self updateUserLocationAnnotationView];
             [self updateCompass];
 
             if ([self.delegate respondsToSelector:@selector(mapViewRegionIsChanging:)])
@@ -2557,7 +2554,6 @@ - (void)notifyMapChange:(mbgl::MapChange)change
         case mbgl::MapChangeRegionDidChange:
         case mbgl::MapChangeRegionDidChangeAnimated:
         {
-            [self updateUserLocationAnnotationView];
             [self updateCompass];
 
             if (self.pan.state       == UIGestureRecognizerStateChanged ||