Backing-out previous change which had the effect of getting rid of the widgets for *all* fixed positioned elements. Removing widgets is a goal at term but it's something that we want to leave to the View Manager folk(s) or at least do in sync with them.

layout/generic/nsHTMLContainerFrame.cpp

@@ -468,10 +468,7 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext* aPresContext,
           aStyleContext->GetStyleData(eStyleStruct_Position);
 
         if (NS_STYLE_POSITION_FIXED == position->mPosition) {
-          nsRect rect;
-          view->GetBounds(rect);
-          if (! rect.IsEmpty())
-            view->CreateWidget(kCChildCID);
+          view->CreateWidget(kCChildCID);
         }
 
         viewManager->SetViewOpacity(view, color->mOpacity);

layout/html/base/src/nsHTMLContainerFrame.cpp

@@ -468,10 +468,7 @@ nsHTMLContainerFrame::CreateViewForFrame(nsIPresContext* aPresContext,
           aStyleContext->GetStyleData(eStyleStruct_Position);
 
         if (NS_STYLE_POSITION_FIXED == position->mPosition) {
-          nsRect rect;
-          view->GetBounds(rect);
-          if (! rect.IsEmpty())
-            view->CreateWidget(kCChildCID);
+          view->CreateWidget(kCChildCID);
         }
 
         viewManager->SetViewOpacity(view, color->mOpacity);