[google_maps_flutter] Allow (de-)serialization of CameraPosition (#1784)

* Allow (de-)serialization of CameraPosition

* Camera position toMap use fixes

* Updated the pubspec and changelog

Author: duzenko

packages/google_maps_flutter/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.5.20+5
+
+* Allow (de-)serialization of CameraPosition
+
 ## 0.5.20+4
 
 * Marker drag event

packages/google_maps_flutter/lib/src/camera.dart

@@ -51,14 +51,13 @@ class CameraPosition {
   /// will be silently clamped to the supported range.
   final double zoom;
 
-  dynamic _toMap() => <String, dynamic>{
+  dynamic toMap() => <String, dynamic>{
         'bearing': bearing,
         'target': target._toJson(),
         'tilt': tilt,
         'zoom': zoom,
       };
 
-  @visibleForTesting
   static CameraPosition fromMap(dynamic json) {
     if (json == null) {
       return null;
@@ -98,7 +97,7 @@ class CameraUpdate {
   /// Returns a camera update that moves the camera to the specified position.
   static CameraUpdate newCameraPosition(CameraPosition cameraPosition) {
     return CameraUpdate._(
-      <dynamic>['newCameraPosition', cameraPosition._toMap()],
+      <dynamic>['newCameraPosition', cameraPosition.toMap()],
     );
   }
 

packages/google_maps_flutter/lib/src/google_map.dart

@@ -192,7 +192,7 @@ class _GoogleMapState extends State<GoogleMap> {
   @override
   Widget build(BuildContext context) {
     final Map<String, dynamic> creationParams = <String, dynamic>{
-      'initialCameraPosition': widget.initialCameraPosition?._toMap(),
+      'initialCameraPosition': widget.initialCameraPosition?.toMap(),
       'options': _googleMapOptions.toMap(),
       'markersToAdd': _serializeMarkerSet(widget.markers),
       'polygonsToAdd': _serializePolygonSet(widget.polygons),

packages/google_maps_flutter/pubspec.yaml

@@ -2,7 +2,7 @@ name: google_maps_flutter
 description: A Flutter plugin for integrating Google Maps in iOS and Android applications.
 author: Flutter Team <[email protected]>
 homepage: https://github.com/flutter/plugins/tree/master/packages/google_maps_flutter
-version: 0.5.20+4
+version: 0.5.20+5
 
 dependencies:
   flutter: