Drop pointerrawupdate support

CHANGELOG.md

@@ -69,7 +69,6 @@ And please only add new entries to the top of this list, right below the `# Unre
 - On Web, fix touch input not gaining or loosing focus.
 - **Breaking:** On Web, dropped support for Safari versions below 13.
 - On Web, prevent clicks on the canvas to select text.
-- On Web, use high-frequency pointer input events when supported by the browser.
 - On Web, `EventLoopProxy` now implements `Send`.
 - On Web, `Window` now implements `Send` and `Sync`.
 - **Breaking:** `WindowExtWebSys::canvas()` now returns an `Option`.

src/platform_impl/web/web_sys/pointer.rs

@@ -6,10 +6,9 @@ use crate::event::{Force, MouseButton};
 use crate::keyboard::ModifiersState;
 
 use event::ButtonsState;
-use once_cell::unsync::OnceCell;
 use wasm_bindgen::prelude::wasm_bindgen;
 use wasm_bindgen::{JsCast, JsValue};
-use web_sys::{HtmlCanvasElement, PointerEvent};
+use web_sys::PointerEvent;
 
 #[allow(dead_code)]
 pub(super) struct PointerHandler {
@@ -191,11 +190,7 @@ impl PointerHandler {
         let window = canvas_common.window.clone();
         let canvas = canvas_common.raw.clone();
         self.on_cursor_move = Some(canvas_common.add_event(
-            if has_pointer_raw_support(&canvas) {
+            "pointermove",
-                "pointerrawupdate"
-            } else {
-                "pointermove"
-            },
             move |event: PointerEvent| {
                 // coalesced events are not available on Safari
                 #[wasm_bindgen]
@@ -311,24 +306,3 @@ impl PointerHandler {
         self.on_touch_cancel = None;
     }
 }
-
-fn has_pointer_raw_support(canvas: &HtmlCanvasElement) -> bool {
-    thread_local! {
-        static POINTER_RAW_SUPPORT: OnceCell<bool> = OnceCell::new();
-    }
-
-    POINTER_RAW_SUPPORT.with(|support| {
-        *support.get_or_init(|| {
-            #[wasm_bindgen]
-            extern "C" {
-                type HtmlCanvasElementExt;
-
-                #[wasm_bindgen(method, getter, js_name = onpointerrawupdate)]
-                fn has_on_pointerrawupdate(this: &HtmlCanvasElementExt) -> JsValue;
-            }
-
-            let canvas: &HtmlCanvasElementExt = canvas.unchecked_ref();
-            !canvas.has_on_pointerrawupdate().is_undefined()
-        })
-    })
-}