Implement HandleKeyboardEvent() method in HtmlDialog implementations....

chrome/browser/gtk/html_dialog_gtk.cc

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/gtk/html_dialog_gtk.h"
 
 #include <gtk/gtk.h>
 
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_window.h"
@@ skipping 84 matching lines @@
 void HtmlDialogGtk::MoveContents(TabContents* source, const gfx::Rect& pos) {
   // The contained web page wishes to resize itself. We let it do this because
   // if it's a dialog we know about, we trust it not to be mean to the user.
 }
 
 void HtmlDialogGtk::ToolbarSizeChanged(TabContents* source,
                                        bool is_animating) {
   // Ignored.
 }
 
+// A simplified version of BrowserWindowGtk::HandleKeyboardEvent().
+// We don't handle global keyboard shortcuts here, but that's fine since
+// they're all browser-specific. (This may change in the future.)
+void HtmlDialogGtk::HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {
+  GdkEventKey* os_event = event.os_event;
+  if (!os_event || event.type == WebKit::WebInputEvent::Char)
+    return;
+
+  // To make sure the default key bindings can still work, such as Escape to
+  // close the dialog.
+  gtk_bindings_activate_event(GTK_OBJECT(dialog_), os_event);
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // HtmlDialogGtk:
 
 void HtmlDialogGtk::InitDialog() {
   tab_contents_.reset(
       new TabContents(profile(), NULL, MSG_ROUTING_NONE, NULL));
   tab_contents_->set_delegate(this);
 
   // This must be done before loading the page; see the comments in
   // HtmlDialogUI.
@@ skipping 28 matching lines @@
                               dialog_size.height());
 
   gtk_widget_show_all(dialog_);
 }
 
 // static
 void HtmlDialogGtk::OnResponse(GtkWidget* widget, int response,
                                HtmlDialogGtk* dialog) {
   dialog->OnDialogClosed(std::string());
 }