`CefWindowDelegate::OnKeyEvent` is not triggered

[nik-sp]

Describe the bug

While investigating the failure of ViewsWindowTest.WindowAccelerator, I noticed that the OnKeyEvent function is not triggered. This happens because CefWindowDelegate::OnKeyEvent is not being called as expected.

To Reproduce

I haven't tested on Linux or Windows, but I expect the issue to be reproducible there as well.
It does work on Windows using CefUnhandledKeyEventHandler: https://github.com/chromiumembedded/cef/blob/a231b7ead7e624dc5c2d79bf4c160aed9c8efeb9/libcef/browser/views/window_impl.cc#L59

Steps to reproduce the issue:

1. Run the ViewsWindowTest.WindowAccelerator unit test:

   ./out/Debug_GN_arm64/ceftests.app/Contents/MacOS/ceftests --use-views --enable-chrome-runtime --gtest_filter=ViewsWindowTest.WindowAccelerator

2. Observe that OnKeyEvent is never called.

Alternatively, you can:

1. Run cefclient and set a breakpoint at ViewsWindow::OnKeyEvent: https://github.com/chromiumembedded/cef/blob/a231b7ead7e624dc5c2d79bf4c160aed9c8efeb9/tests/cefclient/browser/views_window.cc#L908
2. Press any key.
3. Notice that OnKeyEvent is not called.

Expected behavior

CefWindowDelegate::OnKeyEvent should be triggered whenever a key is pressed: https://github.com/chromiumembedded/cef/blob/a231b7ead7e624dc5c2d79bf4c160aed9c8efeb9/include/views/cef_window_delegate.h#L229-L235

Versions (please complete the following information):

• OS: macOS 14.7
• CEF Version: 129, 130