Get mouse events to work with win aura, and make the combobox function in the views examples app.

ui/views/widget/desktop_root_window_host_linux.cc

Index: ui/views/widget/desktop_root_window_host_linux.cc
===================================================================
--- ui/views/widget/desktop_root_window_host_linux.cc	(revision 155443)
+++ ui/views/widget/desktop_root_window_host_linux.cc	(working copy)
@@ -26,12 +26,40 @@
   NOTIMPLEMENTED();
 }
 
+void DesktopRootWindowHostLinux::Close() {
+  // TODO(erg):
+  NOTIMPLEMENTED();
+}
+
+void DesktopRootWindowHostLinux::CloseNow() {
+  // TODO(erg):
+  NOTIMPLEMENTED();
+}
+
+aura::RootWindowHost* DesktopRootWindowHostLinux::AsRootWindowHost() {
+  // TODO(erg):
+  NOTIMPLEMENTED();
+  return NULL;
+}
+
 void DesktopRootWindowHostLinux::ShowWindowWithState(
     ui::WindowShowState show_state) {
   // TODO(erg):
   NOTIMPLEMENTED();
 }
 
+bool DesktopRootWindowHostLinux::IsVisible() const {
+  // TODO(erg):
+  NOTIMPLEMENTED();
+  return true;
+}
+
+gfx::Rect DesktopRootWindowHostLinux::GetClientAreaBoundsInScreen() const {
+  // TODO(erg):
+  NOTIMPLEMENTED();
+  return gfx::Rect(100, 100);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // DesktopRootWindowHost, public: