aura: Add X11 host window management.

ui/aura/root_window.cc

Index: ui/aura/root_window.cc
diff --git a/ui/aura/root_window.cc b/ui/aura/root_window.cc
index 6c45b2368fed4ba84e19cb7c219481a76ac1065b..5ffbc5838688cc4ac93a62352fb89c4ff7550c78 100644
--- a/ui/aura/root_window.cc
+++ b/ui/aura/root_window.cc
@@ -247,6 +247,13 @@ void RootWindow::ScheduleFullDraw() {
   compositor_->ScheduleFullDraw();
 }
 
+bool RootWindow::DispatchNativeEvent(const base::NativeEvent& native_event) {
+#if !defined(OS_MACOSX)
+  return host_->DispatchNativeEvent(native_event);
+#endif
+  return false;
+}
+
 bool RootWindow::DispatchMouseEvent(MouseEvent* event) {
   if (event->type() == ui::ET_MOUSE_DRAGGED ||
       (event->flags() & ui::EF_IS_SYNTHESIZED)) {
@@ -442,6 +449,11 @@ void RootWindow::OnKeyboardMappingChanged() {
                     OnKeyboardMappingChanged(this));
 }
 
+void RootWindow::OnCursorChanged(ui::PlatformCursor cursor) {
+  FOR_EACH_OBSERVER(RootWindowObserver, observers_,
+                    OnCursorChanged(this, cursor));
+}
+
 void RootWindow::OnRootWindowHostClosed() {
   FOR_EACH_OBSERVER(RootWindowObserver, observers_,
                     OnRootWindowHostClosed(this));
@@ -480,6 +492,10 @@ gfx::AcceleratedWidget RootWindow::GetAcceleratedWidget() {
   return host_->GetAcceleratedWidget();
 }
 
+gfx::AcceleratedWidget RootWindow::GetAcceleratedWidgetUsedForEvents() {
+  return host_->GetAcceleratedWidgetUsedForEvents();
+}
+
 void RootWindow::ToggleFullScreen() {
   host_->ToggleFullScreen();
 }