Fix the content_browsertests everywhere maybe.

chrome/browser/ui/views/chrome_web_dialog_view.cc

Index: chrome/browser/ui/views/chrome_web_dialog_view.cc
diff --git a/chrome/browser/ui/views/chrome_web_dialog_view.cc b/chrome/browser/ui/views/chrome_web_dialog_view.cc
index cc0a917cf032a5e1433809e60c4cce308b057ee1..c73f6eafe05706917ad25cb37dbe583c12fa0f23 100644
--- a/chrome/browser/ui/views/chrome_web_dialog_view.cc
+++ b/chrome/browser/ui/views/chrome_web_dialog_view.cc
@@ -13,9 +13,21 @@ namespace chrome {
 gfx::NativeWindow ShowWebDialog(gfx::NativeWindow parent,
                                 content::BrowserContext* context,
                                 ui::WebDialogDelegate* delegate) {
-  views::Widget* widget = views::Widget::CreateWindowWithParent(
-      new views::WebDialogView(context, delegate, new ChromeWebContentsHandler),
-      parent);
+  views::Widget* widget = NULL;
+  if (parent) {
+    widget = views::Widget::CreateWindowWithParent(
+        new views::WebDialogView(context,
+                                 delegate,
+                                 new ChromeWebContentsHandler),
+        parent);
+  } else {
+    // We shouldn't be called with a NULL parent, but sometimes are.
+    widget = views::Widget::CreateWindow(
+        new views::WebDialogView(context,
+                                 delegate,
+                                 new ChromeWebContentsHandler));
+  }
+
   widget->Show();
   return widget->GetNativeWindow();
 }