[video_player] Reduce server dependencies in tests (#5103)

Reduce test dependencies on servers that the Flutter team doesn't control:

- Switches webm URL to the GitHub URL for the example asset,
  matching the existing mp4 setup
- Switches m3u8 URL to the assets-for-api-docs URL that was
  recently added for a native iOS video_player test

Ideally these would use local web severs, but initial attempts to
serve binary assets via the local web server didn't work, and I won't have
time to investigate further in the short term. This is an incremental
improvement, and adds TODOs to fully convert.

Author: stuartmorgan-g

packages/video_player/video_player/example/integration_test/video_player_test.dart

@@ -21,10 +21,13 @@ const String _videoAssetKey =
     kIsWeb ? 'assets/Butterfly-209.webm' : 'assets/Butterfly-209.mp4';
 
 // Returns the URL to load an asset from this example app as a network source.
+//
+// TODO(stuartmorgan): Convert this to a local `HttpServer` that vends the
+// assets directly, https://github.com/flutter/flutter/issues/95420
 String getUrlForAssetAsNetworkSource(String assetKey) {
   return 'https://github.com/flutter/plugins/blob/'
       // This hash can be rolled forward to pick up newly-added assets.
-      'cba393233e559c925a4daf71b06b4bb01c606762'
+      'cb381ced070d356799dddf24aca38ce0579d3d7b'
       '/packages/video_player/video_player/example/'
       '$assetKey'
       '?raw=true';
@@ -56,7 +59,7 @@ void main() {
       (WidgetTester tester) async {
         final VideoPlayerController networkController =
             VideoPlayerController.network(
-          'https://cph-p2p-msl.akamaized.net/hls/live/2000341/test/master.m3u8',
+          'https://flutter.github.io/assets-for-api-docs/assets/videos/hls/bee.m3u8',
         );
         await networkController.initialize();
 
@@ -229,13 +232,8 @@ void main() {
 
   group('network videos', () {
     setUp(() {
-      // TODO(stuartmorgan): Remove this conditional and update the hash in
-      // getUrlForAssetAsNetworkSource as a follow-up, once the webm asset is
-      // checked in.
-      final String videoUrl = kIsWeb
-          ? 'https://interactive-examples.mdn.mozilla.net/media/cc0-videos/flower.webm'
-          : getUrlForAssetAsNetworkSource(_videoAssetKey);
-      _controller = VideoPlayerController.network(videoUrl);
+      _controller = VideoPlayerController.network(
+          getUrlForAssetAsNetworkSource(_videoAssetKey));
     });
 
     testWidgets(

packages/video_player/video_player_android/example/integration_test/video_player_test.dart

@@ -24,10 +24,13 @@ const Duration _playDuration = Duration(seconds: 1);
 const String _videoAssetKey = 'assets/Butterfly-209.mp4';
 
 // Returns the URL to load an asset from this example app as a network source.
+//
+// TODO(stuartmorgan): Convert this to a local `HttpServer` that vends the
+// assets directly, https://github.com/flutter/flutter/issues/95420
 String getUrlForAssetAsNetworkSource(String assetKey) {
   return 'https://github.com/flutter/plugins/blob/'
       // This hash can be rolled forward to pick up newly-added assets.
-      'cba393233e559c925a4daf71b06b4bb01c606762'
+      'cb381ced070d356799dddf24aca38ce0579d3d7b'
       '/packages/video_player/video_player/example/'
       '$assetKey'
       '?raw=true';
@@ -155,7 +158,7 @@ void main() {
 
     testWidgets('live stream duration != 0', (WidgetTester tester) async {
       final MiniController livestreamController = MiniController.network(
-        'https://cph-p2p-msl.akamaized.net/hls/live/2000341/test/master.m3u8',
+        'https://flutter.github.io/assets-for-api-docs/assets/videos/hls/bee.m3u8',
       );
       await livestreamController.initialize();
 

packages/video_player/video_player_avfoundation/example/integration_test/video_player_test.dart

@@ -24,10 +24,13 @@ const Duration _playDuration = Duration(seconds: 1);
 const String _videoAssetKey = 'assets/Butterfly-209.mp4';
 
 // Returns the URL to load an asset from this example app as a network source.
+//
+// TODO(stuartmorgan): Convert this to a local `HttpServer` that vends the
+// assets directly, https://github.com/flutter/flutter/issues/95420
 String getUrlForAssetAsNetworkSource(String assetKey) {
   return 'https://github.com/flutter/plugins/blob/'
       // This hash can be rolled forward to pick up newly-added assets.
-      'cba393233e559c925a4daf71b06b4bb01c606762'
+      'cb381ced070d356799dddf24aca38ce0579d3d7b'
       '/packages/video_player/video_player/example/'
       '$assetKey'
       '?raw=true';
@@ -167,7 +170,7 @@ void main() {
 
     testWidgets('live stream duration != 0', (WidgetTester tester) async {
       final MiniController livestreamController = MiniController.network(
-        'https://cph-p2p-msl.akamaized.net/hls/live/2000341/test/master.m3u8',
+        'https://flutter.github.io/assets-for-api-docs/assets/videos/hls/bee.m3u8',
       );
       await livestreamController.initialize();