Issue #1219 - Align computed DOM styles with mainstream behvior.

This updates our behavior for computed DOM styling to no longer return
null on elements that have no display, but return a 0-length (empty)
style instead and don't throw. For this we stop looking at having a
presentation for the style and just look at the document instead.

This resolves #1219

1 files changed, 1 insertions, 4 deletions

diff --git a/editor/libeditor/CSSEditUtils.cpp b/editor/libeditor/CSSEditUtils.cpp
index 5199838c0..d8146ca65 100644
--- a/editor/libeditor/CSSEditUtils.cpp
+++ b/editor/libeditor/CSSEditUtils.cpp
@@ -569,11 +569,8 @@ CSSEditUtils::GetComputedStyle(Element* aElement)
   nsIDocument* doc = aElement->GetUncomposedDoc();
   NS_ENSURE_TRUE(doc, nullptr);
 
-  nsIPresShell* presShell = doc->GetShell();
-  NS_ENSURE_TRUE(presShell, nullptr);
-
   RefPtr<nsComputedDOMStyle> style =
-    NS_NewComputedDOMStyle(aElement, EmptyString(), presShell);
+    NS_NewComputedDOMStyle(aElement, EmptyString(), doc);
 
   return style.forget();
 }