Reenable triggering of screen rotations by sensors.

chrome/browser/chromeos/login/webui_login_view.cc

Index: chrome/browser/chromeos/login/webui_login_view.cc
diff --git a/chrome/browser/chromeos/login/webui_login_view.cc b/chrome/browser/chromeos/login/webui_login_view.cc
index 36020ec4e3d75ff2d30d3058e63fbe7caa26ee6b..80473ff1f0e681f9b869661891f8c8361bd2aa99 100644
--- a/chrome/browser/chromeos/login/webui_login_view.cc
+++ b/chrome/browser/chromeos/login/webui_login_view.cc
@@ -39,6 +39,10 @@
 #include "chrome/browser/ui/virtual_keyboard/virtual_keyboard_manager.h"
 #endif
 
+#if defined(TOUCH_UI)
+#include "chrome/browser/ui/touch/sensors/screen_orientation_listener.h"
+#endif
+
 namespace {
 
 const char kViewClassName[] = "browser/chromeos/login/WebUILoginView";
@@ -121,6 +125,12 @@ WebUILoginView::WebUILoginView()
   // Make sure the singleton VirtualKeyboardManager object is created.
   VirtualKeyboardManager::GetInstance();
 #endif
+
+#if defined(TOUCH_UI)
+  // Make sure the singleton ScreenOrientationListener object is created.
+  ScreenOrientationListener::GetInstance();
+#endif
+
   accel_map_[views::Accelerator(ui::VKEY_Z, false, true, true)] =
       kAccelNameAccessibility;
   accel_map_[views::Accelerator(ui::VKEY_ESCAPE, false, false, false)] =