linux_aura: Port GtkKeybindingsHandler to Aura.

ui/views/linux_ui/linux_ui.h

Index: ui/views/linux_ui/linux_ui.h
diff --git a/ui/views/linux_ui/linux_ui.h b/ui/views/linux_ui/linux_ui.h
index 15ac6a216bce70ae2d4a8c9a71c659e0955b33dc..ea3b3a800e39f7ceb19f1ac2838052f842598af7 100644
--- a/ui/views/linux_ui/linux_ui.h
+++ b/ui/views/linux_ui/linux_ui.h
@@ -14,6 +14,7 @@
 #include "ui/views/controls/button/button.h"
 #include "ui/views/linux_ui/status_icon_linux.h"
 #include "ui/views/views_export.h"
+#include "ui/wm/public/text_edit_key_bindings_delegate_x11.h"
 
 // The main entrypoint into Linux toolkit specific code. GTK code should only
 // be executed behind this interface.
@@ -42,7 +43,8 @@ class WindowButtonOrderObserver;
 // liuigtk3.so, etc.
 class VIEWS_EXPORT LinuxUI : public ui::LinuxInputMethodContextFactory,
                              public gfx::LinuxFontDelegate,
-                             public ui::LinuxShellDialog {
+                             public ui::LinuxShellDialog,
+                             public ui::wm::TextEditKeyBindingsDelegateX11 {
  public:
   virtual ~LinuxUI() {}