Move mouse_tracking.dart to rendering (#52781)

* Move mouse_tracking to rendering

* Move test

packages/flutter/lib/gestures.dart

@@ -21,7 +21,6 @@ export 'src/gestures/hit_test.dart';
 export 'src/gestures/long_press.dart';
 export 'src/gestures/lsq_solver.dart';
 export 'src/gestures/monodrag.dart';
-export 'src/gestures/mouse_tracking.dart';
 export 'src/gestures/multidrag.dart';
 export 'src/gestures/multitap.dart';
 export 'src/gestures/pointer_router.dart';

packages/flutter/lib/rendering.dart

@@ -45,6 +45,7 @@ export 'src/rendering/image.dart';
 export 'src/rendering/layer.dart';
 export 'src/rendering/list_body.dart';
 export 'src/rendering/list_wheel_viewport.dart';
+export 'src/rendering/mouse_tracking.dart';
 export 'src/rendering/object.dart';
 export 'src/rendering/paragraph.dart';
 export 'src/rendering/performance_overlay.dart';

packages/flutter/lib/src/rendering/binding.dart

@@ -14,6 +14,7 @@ import 'package:flutter/services.dart';
 
 import 'box.dart';
 import 'debug.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 import 'view.dart';
 

packages/flutter/lib/src/rendering/layer.dart

@@ -12,6 +12,7 @@ import 'package:flutter/painting.dart';
 import 'package:vector_math/vector_math_64.dart';
 
 import 'debug.dart';
+import 'mouse_tracking.dart';
 
 /// Information collected for an annotation that is found in the layer tree.
 ///

packages/flutter/lib/src/gestures/mouse_tracking.dart → packages/flutter/lib/src/rendering/mouse_tracking.dart

@@ -6,11 +6,9 @@ import 'dart:collection' show LinkedHashSet;
 import 'dart:ui';
 
 import 'package:flutter/foundation.dart';
+import 'package:flutter/gestures.dart';
 import 'package:flutter/scheduler.dart';
 
-import 'events.dart';
-import 'pointer_router.dart';
-
 /// Signature for listening to [PointerEnterEvent] events.
 ///
 /// Used by [MouseTrackerAnnotation], [MouseRegion] and [RenderMouseRegion].

packages/flutter/lib/src/rendering/platform_view.dart

@@ -12,6 +12,7 @@ import 'package:flutter/services.dart';
 
 import 'box.dart';
 import 'layer.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 
 

packages/flutter/lib/src/rendering/proxy_box.dart

@@ -17,6 +17,7 @@ import 'package:vector_math/vector_math_64.dart';
 import 'binding.dart';
 import 'box.dart';
 import 'layer.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 
 export 'package:flutter/gestures.dart' show

packages/flutter/lib/src/rendering/view.dart

@@ -7,7 +7,6 @@ import 'dart:io' show Platform;
 import 'dart:ui' as ui show Scene, SceneBuilder, Window;
 
 import 'package:flutter/foundation.dart';
-import 'package:flutter/gestures.dart' show MouseTrackerAnnotation;
 import 'package:flutter/services.dart';
 import 'package:vector_math/vector_math_64.dart';
 
@@ -15,6 +14,7 @@ import 'binding.dart';
 import 'box.dart';
 import 'debug.dart';
 import 'layer.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 
 /// The layout constraints for the root render object.