Enable to show the keyboard overlay by shortcut key.

chrome/browser/ui/views/keyboard_overlay_delegate.cc

+// Copyright (c) 2010 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/ui/views/keyboard_overlay_delegate.h"
+
+#include "app/l10n_util.h"
+#include "base/scoped_ptr.h"
+#include "chrome/browser/browser_list.h"
+#include "chrome/browser/dom_ui/html_dialog_ui.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/common/url_constants.h"
+#include "grit/generated_resources.h"
+
+
+void KeyboardOverlayDelegate::ShowDialog(gfx::NativeWindow owning_window) {
+  Browser* browser = BrowserList::GetLastActive();
+  KeyboardOverlayDelegate* delegate = new KeyboardOverlayDelegate(
+      l10n_util::GetString(IDS_KEYBOARD_OVERLAY_TITLE));
+  DCHECK(browser);
+  browser->BrowserShowHtmlDialog(delegate, owning_window);
+}
+
+KeyboardOverlayDelegate::KeyboardOverlayDelegate(
+    const std::wstring& title)
+    : title_(title) {
+}
+
+KeyboardOverlayDelegate::~KeyboardOverlayDelegate() {
+}
+
+bool KeyboardOverlayDelegate::IsDialogModal() const {
+  return true;
+}
+
+std::wstring KeyboardOverlayDelegate::GetDialogTitle() const {
+  return title_;
+}
+
+GURL KeyboardOverlayDelegate::GetDialogContentURL() const {
+  std::string url_string(chrome::kChromeUIKeyboardOverlayURL);
+  return GURL(url_string);
+}
+
+void KeyboardOverlayDelegate::GetDOMMessageHandlers(
+    std::vector<DOMMessageHandler*>* handlers) const {
+}
+
+void KeyboardOverlayDelegate::GetDialogSize(
+    gfx::Size* size) const {
+  size->SetSize(1170, 483);
+}
+
+std::string KeyboardOverlayDelegate::GetDialogArgs() const {
+  return "[]";
+}
+
+void KeyboardOverlayDelegate::OnDialogClosed(
+    const std::string& json_retval) {
+  delete this;
+  return;
+}
+
+void KeyboardOverlayDelegate::OnCloseContents(TabContents* source,
+                                              bool* out_close_dialog) {
+}
+
+bool KeyboardOverlayDelegate::ShouldShowDialogTitle() const {
+  return false;
+}