Fix crash on spell check "Ask Google for suggestions"

ui/views/widget/native_widget_aura.cc

Index: ui/views/widget/native_widget_aura.cc
diff --git a/ui/views/widget/native_widget_aura.cc b/ui/views/widget/native_widget_aura.cc
index 1888378a3538f3c3f5b8f965a34fe95b172f362b..57692fa8022f4f8d71b075604462ddbba1da8ede 100644
--- a/ui/views/widget/native_widget_aura.cc
+++ b/ui/views/widget/native_widget_aura.cc
@@ -94,6 +94,10 @@ gfx::Font NativeWidgetAura::GetWindowTitleFont() {
 // NativeWidgetAura, internal::NativeWidgetPrivate implementation:
 
 void NativeWidgetAura::InitNativeWidget(const Widget::InitParams& params) {
+  // Aura needs to know which desktop (Ash or regular) will manage this widget.
+  // See Widget::InitParams::context for details.
+  DCHECK(params.parent || params.context);

[stevenjb, 2013/01/24 23:32:33]

nit: Since now at least two devs have been bitten by this, can you add '<<
"InitNativeWidget must provide parent or context"' so that devs can egt some
feedback without running a debugger?

+
   ownership_ = params.ownership;
 
   window_->set_user_data(this);