[web] Move frame_reference.dart to the html/ folder (#162608)

The `frame_reference.dart` file is only used by the HTML renderer. I'm
moving the file to the `html/` folder so that we don't forget to delete
with the rest of the HTML renderer code.

Author: mdebbar

engine/src/flutter/ci/licenses_golden/licenses_flutter

@@ -41216,7 +41216,6 @@ ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/font_change_util.dart + ../..
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/font_fallback_data.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/font_fallbacks.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/fonts.dart + ../../../flutter/LICENSE
-ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/frame_reference.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/frame_service.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/frame_timing_recorder.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/backdrop_filter.dart + ../../../flutter/LICENSE
@@ -41226,6 +41225,7 @@ ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/clip.dart + ../../../flu
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/color_filter.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/debug_canvas_reuse_overlay.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/dom_canvas.dart + ../../../flutter/LICENSE
+ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/frame_reference.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/image.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/image_filter.dart + ../../../flutter/LICENSE
 ORIGIN: ../../../flutter/lib/web_ui/lib/src/engine/html/offset.dart + ../../../flutter/LICENSE
@@ -44170,7 +44170,6 @@ FILE: ../../../flutter/lib/web_ui/lib/src/engine/font_change_util.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/font_fallback_data.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/font_fallbacks.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/fonts.dart
-FILE: ../../../flutter/lib/web_ui/lib/src/engine/frame_reference.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/frame_service.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/frame_timing_recorder.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/backdrop_filter.dart
@@ -44180,6 +44179,7 @@ FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/clip.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/color_filter.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/debug_canvas_reuse_overlay.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/dom_canvas.dart
+FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/frame_reference.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/image.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/image_filter.dart
 FILE: ../../../flutter/lib/web_ui/lib/src/engine/html/offset.dart

engine/src/flutter/lib/web_ui/lib/src/engine.dart

@@ -65,7 +65,6 @@ export 'engine/font_change_util.dart';
 export 'engine/font_fallback_data.dart';
 export 'engine/font_fallbacks.dart';
 export 'engine/fonts.dart';
-export 'engine/frame_reference.dart';
 export 'engine/frame_service.dart';
 export 'engine/frame_timing_recorder.dart';
 export 'engine/html/backdrop_filter.dart';
@@ -75,6 +74,7 @@ export 'engine/html/clip.dart';
 export 'engine/html/color_filter.dart';
 export 'engine/html/debug_canvas_reuse_overlay.dart';
 export 'engine/html/dom_canvas.dart';
+export 'engine/html/frame_reference.dart';
 export 'engine/html/image.dart';
 export 'engine/html/image_filter.dart';
 export 'engine/html/offset.dart';

engine/src/flutter/lib/web_ui/lib/src/engine/html/bitmap_canvas.dart

@@ -12,13 +12,13 @@ import '../canvas_pool.dart';
 import '../display.dart';
 import '../dom.dart';
 import '../engine_canvas.dart';
-import '../frame_reference.dart';
 import '../text/canvas_paragraph.dart';
 import '../util.dart';
 import '../vector_math.dart';
 import 'clip.dart';
 import 'color_filter.dart';
 import 'dom_canvas.dart';
+import 'frame_reference.dart';
 import 'image.dart';
 import 'painting.dart';
 import 'path/path.dart';

engine/src/flutter/lib/web_ui/lib/src/engine/frame_reference.dart renamed to engine/src/flutter/lib/web_ui/lib/src/engine/html/frame_reference.dart

@@ -10,12 +10,12 @@ import 'package:ui/ui.dart' as ui;
 
 import '../dom.dart';
 import '../engine_canvas.dart';
-import '../frame_reference.dart';
 import '../util.dart';
 import '../vector_math.dart';
 import 'bitmap_canvas.dart';
 import 'debug_canvas_reuse_overlay.dart';
 import 'dom_canvas.dart';
+import 'frame_reference.dart';
 import 'image.dart';
 import 'path/path_metrics.dart';
 import 'recording_canvas.dart';

engine/src/flutter/lib/web_ui/lib/src/engine/html/picture.dart

@@ -6,12 +6,12 @@ import 'package:meta/meta.dart';
 import 'package:ui/ui.dart' as ui;
 
 import '../dom.dart';
-import '../frame_reference.dart';
 import '../frame_service.dart';
 import '../onscreen_logging.dart';
 import '../semantics.dart';
 import '../util.dart';
 import '../vector_math.dart';
+import 'frame_reference.dart';
 import 'picture.dart';
 import 'scene.dart';
 import 'surface_stats.dart';