[web] Move all public web-only APIs to dart:ui_web #126831
Description
- URL strategy with all of its bits and pieces.
-
PlatformViewRegistry -
webOnlyAssetManager -
webOnlySetPluginHandler -
webOnlyInitializePlatform -
webOnlyWarmupEngine -
debugEmulateFlutterTesterEnvironment -
webOnlyInstantiateImageCodecFromUrl(rename to make it clear it's html-renderer-only). -
WebOnlyImageCodecChunkCallback -
ui.window.debugOverrideDevicePixelRatio -
ui.window.webOnlyDebugPhysicalSizeOverride -
_flutter_internal_on_benchmark -
Platform/browser detection logic (currently it's duplicated infoundation/_platform_web.dart)- We decided that this shouldn't go in
dart:ui_webbut in a separate package instead.
- We decided that this shouldn't go in