perf(app): skip unchanged software web frames

crates/ely_app/src/shell/web_surface_state.rs

@@ -9,7 +9,9 @@ use super::{
     web_surface_geometry::{
         WebSurfaceClickPoint, WebSurfaceScrollDelta, WebSurfaceScrollOffset, WebSurfaceSize,
     },
+    web_surface_metadata::WebSurfacePageMetadata,
     web_surface_permissions::WebSurfaceSitePermission,
+    web_surface_runtime::WebSurfaceUrlChange,
 };
 
 pub(super) struct WebSurfaceScrollState {
@@ -101,6 +103,13 @@ pub(super) enum WebSurfaceState {
     Failed { message: String },
 }
 
+#[derive(Default)]
+pub(super) struct WebSurfaceTickResult {
+    pub(super) changed: bool,
+    pub(super) url_changes: Vec<WebSurfaceUrlChange>,
+    pub(super) page_metadata: Vec<WebSurfacePageMetadata>,
+}
+
 /// All per-tab surface invariants in one owner.
 ///
 /// Replaces the previous 11 parallel `BTreeMap<TabId, _>` fields on
@@ -179,6 +188,13 @@ impl PerTabSurface {
         self.last_ensure_key = Some(key);
     }
 
+    pub(super) fn matches_ready(&self, frame: &WebSurfaceFrame) -> bool {
+        match self.state.as_ref() {
+            Some(WebSurfaceState::Ready(current)) => current.has_same_software_render_as(frame),
+            _ => false,
+        }
+    }
+
     fn has_pending_input(&self) -> bool {
         self.hover_point.is_some()
             || self.click_point.is_some()