Update ui::PointerEvent to support mouse wheel and capture change events.

ui/views/mus/pointer_watcher_event_router_unittest.cc

Index: ui/views/mus/pointer_watcher_event_router_unittest.cc
diff --git a/ui/views/mus/pointer_watcher_event_router_unittest.cc b/ui/views/mus/pointer_watcher_event_router_unittest.cc
index 4dd31442bf6ae488210f901803fd2df26d55f27a..f24f2aaff67da4a35fd8fc123c061a4b97026c98 100644
--- a/ui/views/mus/pointer_watcher_event_router_unittest.cc
+++ b/ui/views/mus/pointer_watcher_event_router_unittest.cc
@@ -131,6 +131,14 @@ TEST_F(PointerWatcherEventRouterTest, PointerWatcherNoMove) {
       ui::ET_POINTER_UP, gfx::Point(), gfx::Point(), ui::EF_NONE, 1,
       ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE),
       base::TimeTicks());
+  ui::PointerEvent pointer_event_wheel(
+      ui::ET_POINTER_WHEEL_CHANGED, gfx::Point(), gfx::Point(), ui::EF_NONE, 1,
+      ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE),
+      base::TimeTicks());
+  ui::PointerEvent pointer_event_capture(
+      ui::ET_POINTER_CAPTURE_CHANGED, gfx::Point(), gfx::Point(), ui::EF_NONE,
+      1, ui::PointerDetails(ui::EventPointerType::POINTER_TYPE_MOUSE),
+      base::TimeTicks());
 
   // PointerWatchers receive pointer down events.
   TestPointerWatcher watcher1;
@@ -144,6 +152,18 @@ TEST_F(PointerWatcherEventRouterTest, PointerWatcherNoMove) {
   EXPECT_EQ(ui::ET_POINTER_UP, watcher1.last_event_observed()->type());
   watcher1.Reset();
 
+  // PointerWatchers receive pointer wheel changed events.
+  OnPointerEventObserved(pointer_event_wheel);
+  EXPECT_EQ(ui::ET_POINTER_WHEEL_CHANGED,
+            watcher1.last_event_observed()->type());
+  watcher1.Reset();
+
+  // PointerWatchers receive pointer capture changed events.
+  OnPointerEventObserved(pointer_event_capture);
+  EXPECT_EQ(ui::ET_POINTER_CAPTURE_CHANGED,
+            watcher1.last_event_observed()->type());
+  watcher1.Reset();
+
   // Two PointerWatchers can both receive a single observed event.
   TestPointerWatcher watcher2;
   pointer_watcher_event_router->AddPointerWatcher(&watcher2, false);