[video_player] Fix tests on master (flutter#3082)

The previous push removed a class used for testing in the video_player package. This PR fixes tests to use the new class.

Author: creativecreatorormaybenot

packages/video_player/video_player/CHANGELOG.md

@@ -1,3 +1,8 @@
+## 0.10.12+5
+
+* Depend on `video_player_platform_interface` version that contains the new `TestHostVideoPlayerApi`
+  in order for tests to pass using the latest dependency.
+
 ## 0.10.12+4
 
 * Keep handling deprecated Android v1 classes for backward compatibility.

packages/video_player/video_player/pubspec.yaml

@@ -4,7 +4,7 @@ description: Flutter plugin for displaying inline video with other Flutter
 # 0.10.y+z is compatible with 1.0.0, if you land a breaking change bump
 # the version to 2.0.0.
 # See more details: https://github.com/flutter/flutter/wiki/Package-migration-to-1.0.0
-version: 0.10.12+4
+version: 0.10.12+5
 homepage: https://github.com/flutter/plugins/tree/master/packages/video_player/video_player
 
 flutter:
@@ -20,7 +20,7 @@ flutter:
 
 dependencies:
   meta: ^1.0.5
-  video_player_platform_interface: ^2.1.0
+  video_player_platform_interface: ^2.2.0
   # The design on https://flutter.dev/go/federated-plugins was to leave
   # this constraint as "any". We cannot do it right now as it fails pub publish
   # validation, so we set a ^ constraint.

packages/video_player/video_player/test/video_player_test.dart

@@ -588,9 +588,9 @@ void main() {
   });
 }
 
-class FakeVideoPlayerPlatform extends VideoPlayerApiTest {
+class FakeVideoPlayerPlatform extends TestHostVideoPlayerApi {
   FakeVideoPlayerPlatform() {
-    VideoPlayerApiTestSetup(this);
+    TestHostVideoPlayerApi.setup(this);
   }
 
   Completer<bool> initialized = Completer<bool>();
@@ -657,6 +657,11 @@ class FakeVideoPlayerPlatform extends VideoPlayerApiTest {
     calls.add('setVolume');
   }
 
+  @override
+  void setPlaybackSpeed(PlaybackSpeedMessage arg) {
+    // todo: implement as part of completing https://github.com/flutter/plugins/pull/3031
+  }
+
   @override
   void setMixWithOthers(MixWithOthersMessage arg) {
     calls.add('setMixWithOthers');