win/aura: Remove some more non-aura code for Windows.

chrome/browser/ui/webui/help/version_updater_win.cc

Index: chrome/browser/ui/webui/help/version_updater_win.cc
diff --git a/chrome/browser/ui/webui/help/version_updater_win.cc b/chrome/browser/ui/webui/help/version_updater_win.cc
index 46253f6a553ac3ed9c75c8eb898dd1c15cb6c0ca..9825fe02ff594e9ff129e41332640258b8937fea 100644
--- a/chrome/browser/ui/webui/help/version_updater_win.cc
+++ b/chrome/browser/ui/webui/help/version_updater_win.cc
@@ -251,12 +251,6 @@ gfx::AcceleratedWidget VersionUpdaterWin::GetElevationParent() {
   EnumThreadWindows(GetCurrentThreadId(),
                     WindowEnumeration,
                     reinterpret_cast<LPARAM>(&window));
-#if !defined(USE_AURA)
-  // If using Aura, we might not have a Visible window in this process. In
-  // theory Google update can cope with that.
-  DCHECK(window != NULL) << "Failed to find a valid window handle on thread: "
-                         << GetCurrentThreadId();
-#endif
   return window;
 }