Create a valid RendererPreferences for notification windows.

chrome/browser/notifications/balloon_host.cc

Index: chrome/browser/notifications/balloon_host.cc
diff --git a/chrome/browser/notifications/balloon_host.cc b/chrome/browser/notifications/balloon_host.cc
index b3baa9b0ac7f1cc40a1d76d1fc47ec0dd15e8cb5..7b44ff7878d63047a2f8aa1e45f4e6aa6e8a0a92 100644
--- a/chrome/browser/notifications/balloon_host.cc
+++ b/chrome/browser/notifications/balloon_host.cc
@@ -138,6 +138,9 @@ void BalloonHost::Init() {
   chrome::SetViewType(web_contents_.get(), chrome::VIEW_TYPE_NOTIFICATION);
   web_contents_->SetDelegate(this);
   Observe(web_contents_.get());
+  renderer_preferences_util::UpdateFromSystemSettings(
+      web_contents_->GetMutableRendererPrefs(), balloon_->profile());

[stevenjb, 2012/08/02 17:17:34]

Is this modifying web_contents_->GetMutableRendererPrefs()? If so, shouldn't the
arguments be in the reverse order? I realize that might be out of scope for this
CL, but it's not clear from reading this what it is doing.

[kinaba, 2012/08/03 01:39:23]

Yes, this is how the function is defined in 2 or 3 years ago...
I understand your concern, but not sure if it is worth changing.
For this CL, I'll add some comments here to clarify it.

+  web_contents_->GetRenderViewHost()->SyncRendererPrefs();
 
   web_contents_->GetController().LoadURL(
       balloon_->notification().content_url(), content::Referrer(),