Add a virtual keyboard webui at chrome://keyboard/

chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc

Index: chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
diff --git a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
index 40a1b996f5cf2a1b5bbd0c015f7743c923d9a13b..96b99cf0652086b574e3ffd141b47dcd74aa160e 100644
--- a/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
+++ b/chrome/browser/ui/webui/chrome_web_ui_controller_factory.cc
@@ -48,6 +48,7 @@
 #include "chrome/browser/ui/webui/sync_internals_ui.h"
 #include "chrome/browser/ui/webui/user_actions/user_actions_ui.h"
 #include "chrome/browser/ui/webui/version_ui.h"
+#include "chrome/browser/ui/webui/virtual_keyboard_ui.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/feature_switch.h"
@@ -185,6 +186,10 @@ WebUIFactoryFunction GetWebUIFactoryFunction(WebUI* web_ui,
     return &NewWebUI<NewTabUI>;
   }
 
+  // FIXME(bryeung): move this to the right line below
+  if (url.host() == chrome::kChromeUIVirtualKeyboardHost)
+    return &NewWebUI<VirtualKeyboardUI>;
+
   /****************************************************************************
    * Please keep this in alphabetical order. If #ifs or special logics are
    * required, add it below in the appropriate section.