Make TreeScope::baseURL pure virtual

Source/core/dom/TreeScope.cpp

Index: Source/core/dom/TreeScope.cpp
diff --git a/Source/core/dom/TreeScope.cpp b/Source/core/dom/TreeScope.cpp
index 6bf5ba49941bc47fd422dbe5b1fa525ca4cc5305..44223f13a948892c4cee09be0ac17e0d748b111a 100644
--- a/Source/core/dom/TreeScope.cpp
+++ b/Source/core/dom/TreeScope.cpp
@@ -497,7 +497,7 @@ void TreeScope::setNeedsStyleRecalcForViewportUnits()
 
 KURL TreeScope::completeURL(const String& url) const
 {
-    return document().completeURLWithOverride(url, baseURL());
+    return document().completeURLWithOverride(url, m_baseURL.isEmpty() ? document().baseURL() : m_baseURL);

[esprehn, 2014/01/14 00:22:12]

Hmm, shouldn't the baseURL getter on ShadowRoot do this for you?

shadowRoot.baseURI from JS should return the Document's URL I think if you
haven't assigned anything yet?

[adamk, 2014/01/14 00:34:03]

Very good points. I've added the logic to baseURL as suggested, and will update
the CL description. Please take another look, as I'm not sure you'll like the
way I'm avoiding infinite recursion.

 }
 
 } // namespace WebCore