Desktop aura: Expand what the ViewsDelegate can do to new windows.

ui/views/views_delegate.h

Index: ui/views/views_delegate.h
diff --git a/ui/views/views_delegate.h b/ui/views/views_delegate.h
index 79e4794bd05d693872df7952d6a8ff61352594a1..b59412482caa80dc8409544c13743a83c217d4af 100644
--- a/ui/views/views_delegate.h
+++ b/ui/views/views_delegate.h
@@ -106,13 +106,9 @@ class VIEWS_EXPORT ViewsDelegate {
       content::BrowserContext* browser_context,
       content::SiteInstance* site_instance) = 0;
 
-  // Creates a NativeWidget implementation. Returning NULL means Widget will
-  // create a default implementation for the platform.
-  virtual NativeWidget* CreateNativeWidget(
-      Widget::InitParams::Type type,
-      internal::NativeWidgetDelegate* delegate,
-      gfx::NativeView parent,
-      gfx::NativeView context) = 0;
+  // Gives the platform a chance to modify the properties of a Widget.
+  virtual void OnBeforeWidgetInit(Widget::InitParams* params,
+                            internal::NativeWidgetDelegate* delegate) = 0;
 };
 
 }  // namespace views