Switch about box to web ui on Windows.

chrome/browser/ui/views/about_chrome_view.cc

Index: chrome/browser/ui/views/about_chrome_view.cc
diff --git a/chrome/browser/ui/views/about_chrome_view.cc b/chrome/browser/ui/views/about_chrome_view.cc
index 3f3c9ed115f734fce037b10229d021a366cd1953..9e6f18aa151c88e3b58422636798186dd7aa5667 100644
--- a/chrome/browser/ui/views/about_chrome_view.cc
+++ b/chrome/browser/ui/views/about_chrome_view.cc
@@ -529,7 +529,7 @@ void AboutChromeView::ViewHierarchyChanged(bool is_add,
             !base::win::UserAccountControlIsEnabled())) {
         UpdateStatus(UPGRADE_CHECK_STARTED, GOOGLE_UPDATE_NO_ERROR, string16());
         // CheckForUpdate(false, ...) means don't upgrade yet.
-        google_updater_->CheckForUpdate(false, GetWidget());
+        google_updater_->CheckForUpdate(false, GetWidget()->GetNativeWindow());
       }
 #endif
     } else {
@@ -682,7 +682,7 @@ void AboutChromeView::UpdateStatus(GoogleUpdateUpgradeResult result,
       google_updater_->set_status_listener(this);
       UpdateStatus(UPGRADE_STARTED, GOOGLE_UPDATE_NO_ERROR, string16());
       // CheckForUpdate(true,...) means perform upgrade if new version found.
-      google_updater_->CheckForUpdate(true, GetWidget());
+      google_updater_->CheckForUpdate(true, GetWidget()->GetNativeWindow());
       // TODO(seanparent): Need to see if this code needs to change to
       // force a machine restart.
       return;