Remove unused timestamp field

Move notification directly into history. Improve test.

src/Notification.zig

@@ -163,7 +163,6 @@ pub const FrameNavigated = struct {
 // sending DOM.documentUpdated.
 pub const FrameNavigatedWithinDocument = struct {
     frame_id: u32,
-    timestamp: u64,
     url: [:0]const u8,
     navigation_type: NavigationType = .other,
 

src/browser/Frame.zig

@@ -33,7 +33,6 @@ const Parser = @import("parser/Parser.zig");
 const h5e = @import("parser/html5ever.zig");
 
 const CustomElementReactions = @import("CustomElementReactions.zig");
-const Notification = @import("../Notification.zig");
 
 const URL = @import("URL.zig");
 const Blob = @import("webapi/Blob.zig");
@@ -600,22 +599,6 @@ pub fn isSameOrigin(self: *const Frame, url: [:0]const u8) bool {
     return std.mem.eql(u8, URL.getHost(url), URL.getHost(current_origin));
 }
 
-// Notify observers of a same-document navigation (History pushState /
-// replaceState, fragment change, or history traversal). Unlike navigate(),
-// the document and its execution context are unchanged — only the URL moves.
-pub fn notifyNavigatedWithinDocument(
-    self: *Frame,
-    url: [:0]const u8,
-    navigation_type: Notification.FrameNavigatedWithinDocument.NavigationType,
-) void {
-    self._session.notification.dispatch(.frame_navigated_within_document, &.{
-        .frame_id = self._frame_id,
-        .url = url,
-        .timestamp = timestamp(.monotonic),
-        .navigation_type = navigation_type,
-    });
-}
-
 pub fn navigate(self: *Frame, request_url: [:0]const u8, opts: NavigateOpts) !void {
     lp.assert(self._load_state == .waiting, "frame.renavigate", .{});
     const session = self._session;

src/browser/webapi/History.zig

@@ -17,9 +17,10 @@
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
 const std = @import("std");
-const js = @import("../js/js.zig");
 
+const js = @import("../js/js.zig");
 const Frame = @import("../Frame.zig");
+
 const PopStateEvent = @import("event/PopStateEvent.zig");
 
 const History = @This();
@@ -50,37 +51,47 @@ pub fn setScrollRestoration(self: *History, str: []const u8) void {
 }
 
 pub fn pushState(_: *History, state: js.Value, _: ?[]const u8, _url: ?[]const u8, frame: *Frame) !void {
-    const arena = frame._session.arena;
+    const session = frame._session;
+    const arena = session.arena;
     const url = if (_url) |u|
         try @import("../URL.zig").resolve(arena, frame.url, u, .{})
     else
         try arena.dupeZ(u8, frame.url);
 
     const json = state.toJson(arena) catch return error.DataClone;
-    _ = try frame._session.navigation.pushEntry(url, .{ .source = .history, .value = json }, frame, true);
+    _ = try session.navigation.pushEntry(url, .{ .source = .history, .value = json }, frame, true);
 
     frame.url = url;
     // setHref == reinitializing.
     try frame.window._location._url.setHref(url, &frame.js.execution);
 
-    frame.notifyNavigatedWithinDocument(url, .historyApi);
+    session.notification.dispatch(.frame_navigated_within_document, &.{
+        .url = url,
+        .frame_id = frame._frame_id,
+        .navigation_type = .historyApi,
+    });
 }
 
 pub fn replaceState(_: *History, state: js.Value, _: ?[]const u8, _url: ?[]const u8, frame: *Frame) !void {
-    const arena = frame._session.arena;
+    const session = frame._session;
+    const arena = session.arena;
     const url = if (_url) |u|
         try @import("../URL.zig").resolve(arena, frame.url, u, .{})
     else
         try arena.dupeZ(u8, frame.url);
 
     const json = state.toJson(arena) catch return error.DataClone;
-    _ = try frame._session.navigation.replaceEntry(url, .{ .source = .history, .value = json }, frame, true);
+    _ = try session.navigation.replaceEntry(url, .{ .source = .history, .value = json }, frame, true);
 
     frame.url = url;
     // setHref == reinitializing.
     try frame.window._location._url.setHref(url, &frame.js.execution);
 
-    frame.notifyNavigatedWithinDocument(url, .historyApi);
+    session.notification.dispatch(.frame_navigated_within_document, &.{
+        .url = url,
+        .frame_id = frame._frame_id,
+        .navigation_type = .historyApi,
+    });
 }
 
 fn goInner(delta: i32, frame: *Frame) !void {

src/cdp/domains/page.zig

@@ -1732,5 +1732,6 @@ test "cdp.frame: history.pushState emits Page.navigatedWithinDocument" {
     try ctx.expectSentEvent("Page.navigatedWithinDocument", .{
         .frameId = "FID-0000000001",
         .navigationType = "historyApi",
+        .url = "http://127.0.0.1:9582/next",
     }, .{});
 }