Move mouse_tracking.dart to rendering (#52781) * Move mouse_tracking to rendering * Move test

diff --git a/packages/flutter/lib/gestures.dart b/packages/flutter/lib/gestures.dart
index d535327..3d1cdc6 100644
--- a/packages/flutter/lib/gestures.dart
+++ b/packages/flutter/lib/gestures.dart

@@ -21,7 +21,6 @@
 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';

diff --git a/packages/flutter/lib/rendering.dart b/packages/flutter/lib/rendering.dart
index 14ffbc5..6c9b6b6 100644
--- a/packages/flutter/lib/rendering.dart
+++ b/packages/flutter/lib/rendering.dart

@@ -45,6 +45,7 @@
 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';

diff --git a/packages/flutter/lib/src/rendering/binding.dart b/packages/flutter/lib/src/rendering/binding.dart
index 2d1babb..97d49a8 100644
--- a/packages/flutter/lib/src/rendering/binding.dart
+++ b/packages/flutter/lib/src/rendering/binding.dart

@@ -14,6 +14,7 @@
 
 import 'box.dart';
 import 'debug.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 import 'view.dart';
 

diff --git a/packages/flutter/lib/src/rendering/layer.dart b/packages/flutter/lib/src/rendering/layer.dart
index 451716d..1cb041c 100644
--- a/packages/flutter/lib/src/rendering/layer.dart
+++ b/packages/flutter/lib/src/rendering/layer.dart

@@ -12,6 +12,7 @@
 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.
 ///

diff --git a/packages/flutter/lib/src/gestures/mouse_tracking.dart b/packages/flutter/lib/src/rendering/mouse_tracking.dart
similarity index 99%
rename from packages/flutter/lib/src/gestures/mouse_tracking.dart
rename to packages/flutter/lib/src/rendering/mouse_tracking.dart
index 1b5b1c7..9f16a89 100644
--- a/packages/flutter/lib/src/gestures/mouse_tracking.dart
+++ b/packages/flutter/lib/src/rendering/mouse_tracking.dart

@@ -6,11 +6,9 @@
 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].

diff --git a/packages/flutter/lib/src/rendering/platform_view.dart b/packages/flutter/lib/src/rendering/platform_view.dart
index dc8c32f..679b369 100644
--- a/packages/flutter/lib/src/rendering/platform_view.dart
+++ b/packages/flutter/lib/src/rendering/platform_view.dart

@@ -12,6 +12,7 @@
 
 import 'box.dart';
 import 'layer.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 
 

diff --git a/packages/flutter/lib/src/rendering/proxy_box.dart b/packages/flutter/lib/src/rendering/proxy_box.dart
index 33db06c..25f8c83 100644
--- a/packages/flutter/lib/src/rendering/proxy_box.dart
+++ b/packages/flutter/lib/src/rendering/proxy_box.dart

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

diff --git a/packages/flutter/lib/src/rendering/view.dart b/packages/flutter/lib/src/rendering/view.dart
index b67795e..464e4b5 100644
--- a/packages/flutter/lib/src/rendering/view.dart
+++ b/packages/flutter/lib/src/rendering/view.dart

@@ -7,7 +7,6 @@
 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 'box.dart';
 import 'debug.dart';
 import 'layer.dart';
+import 'mouse_tracking.dart';
 import 'object.dart';
 
 /// The layout constraints for the root render object.

diff --git a/packages/flutter/test/gestures/mouse_tracking_test.dart b/packages/flutter/test/rendering/mouse_tracking_test.dart
similarity index 100%
rename from packages/flutter/test/gestures/mouse_tracking_test.dart
rename to packages/flutter/test/rendering/mouse_tracking_test.dart