Integrate WebUI Login with cros.

chrome/browser/extensions/extension_input_api.cc

Index: chrome/browser/extensions/extension_input_api.cc
diff --git a/chrome/browser/extensions/extension_input_api.cc b/chrome/browser/extensions/extension_input_api.cc
index 82df0db3a97e3f5c5e36d559d35ba9bd2ccce41c..eb305f075615dc1567de98b151479929cc92fe0f 100644
--- a/chrome/browser/extensions/extension_input_api.cc
+++ b/chrome/browser/extensions/extension_input_api.cc
@@ -19,6 +19,7 @@
 #if defined(OS_CHROMEOS) && defined(TOUCH_UI)
 #include "chrome/browser/chromeos/cros/cros_library.h"
 #include "chrome/browser/chromeos/cros/input_method_library.h"
+#include "chrome/browser/chromeos/login/dom_login_display.h"
 #endif
 
 namespace {
@@ -60,6 +61,13 @@ void InputFunction::Run() {
 }
 
 views::Widget* SendKeyboardEventInputFunction::GetTopLevelWidget() {
+#if defined(OS_CHROMEOS) && defined(TOUCH_UI)
+  views::Widget* login_window =
+      chromeos::DOMLoginDisplay::GetCurrentLoginWindow();
+  if (login_window)
+    return login_window;
+#endif
+
   Browser* browser = GetCurrentBrowser();
   if (!browser)
     return NULL;