aura: Remove WindowTreeHost::PostNativeEvent().

WindowTreeHost::PostNativeEvent() is only used in tests. So remove this from
the public API. Instead:
 . For Win32, directly use PostMessage (this is used in only two places).
 . For Ozone, use EventSourceTestApi to inject the event (this is equivalent to
   current code, in terms of not doing the right thing when menus are open).
 . For X11, introduce aura::test::PostEventToWindowTreeHost() instead, and use
   it in tests.

BUG=none
R=sky@chromium.org

Review URL: https://codereview.chromium.org/710553002

Cr-Commit-Position: refs/heads/master@{#303315}

1 files changed, 0 insertions, 5 deletions

diff --git a/ui/aura/window_tree_host_win.cc b/ui/aura/window_tree_host_win.cc
index 51bbcc6..9a30344 100644
--- a/ui/aura/window_tree_host_win.cc
+++ b/ui/aura/window_tree_host_win.cc
@@ -112,11 +112,6 @@ void WindowTreeHostWin::OnCursorVisibilityChangedNative(bool show) {
   NOTIMPLEMENTED();
 }
 
-void WindowTreeHostWin::PostNativeEvent(const base::NativeEvent& native_event) {
-  ::PostMessage(
-      widget_, native_event.message, native_event.wParam, native_event.lParam);
-}
-
 ui::EventProcessor* WindowTreeHostWin::GetEventProcessor() {
   return dispatcher();
 }