Bug 1432186 part 1. Remove nsIDOMNode's prefix, namespaceURI, localName attributes. r=mccr8

Removing them all together because the only non-comm-central consumer is all
the same and this way there's no intermediate state to be maintained there
where we need both the nsINode and the nsIDOMNode.

MozReview-Commit-ID: GDjrroN1jao

dom/base/nsINode.h

@@ -2341,21 +2341,6 @@ ToCanonicalSupports(nsINode* aPointer)
     *aResult = clone.forget().take()->AsDOMNode(); \
     return NS_OK; \
   } \
-  NS_IMETHOD GetNamespaceURI(nsAString& aNamespaceURI) __VA_ARGS__ override \
-  { \
-    nsINode::GetNamespaceURI(aNamespaceURI); \
-    return NS_OK; \
-  } \
-  NS_IMETHOD GetPrefix(nsAString& aPrefix) __VA_ARGS__ override \
-  { \
-    nsINode::GetPrefix(aPrefix); \
-    return NS_OK; \
-  } \
-  NS_IMETHOD GetLocalName(nsAString& aLocalName) __VA_ARGS__ override \
-  { \
-    aLocalName = nsINode::LocalName(); \
-    return NS_OK; \
-  } \
   NS_IMETHOD GetTextContent(nsAString& aTextContent) __VA_ARGS__ override \
   { \
     mozilla::ErrorResult rv; \

dom/interfaces/core/nsIDOMNode.idl

@@ -50,13 +50,6 @@ interface nsIDOMNode : nsISupports
   boolean                   hasChildNodes();
   // Modified in DOM Level 4:
   [optional_argc] nsIDOMNode                cloneNode([optional] in boolean deep);
-  // Introduced in DOM Level 2:
-  readonly attribute DOMString        namespaceURI;
-  // Modified in DOM Core
-  readonly attribute DOMString        prefix;
-
-  // Introduced in DOM Level 2:
-  readonly attribute DOMString        localName;
 
   // DocumentPosition
   const unsigned short      DOCUMENT_POSITION_DISCONNECTED = 0x01;

layout/inspector/inDOMView.cpp

@@ -366,21 +366,20 @@ inDOMView::GetCellText(int32_t row, nsITreeColumn* col, nsAString& _retval)
   RowToNode(row, &node);
   if (!node) return NS_ERROR_FAILURE;
 
-  nsIDOMNode* domNode = node->node;
+  nsCOMPtr<nsINode> domNode = do_QueryInterface(node->node);
 
   nsAutoString colID;
   col->GetId(colID);
   if (colID.EqualsLiteral("colNodeName"))
-    domNode->GetNodeName(_retval);
+    _retval = domNode->NodeName();
   else if (colID.EqualsLiteral("colLocalName"))
-    domNode->GetLocalName(_retval);
+    _retval = domNode->LocalName();
   else if (colID.EqualsLiteral("colPrefix"))
     domNode->GetPrefix(_retval);
   else if (colID.EqualsLiteral("colNamespaceURI"))
     domNode->GetNamespaceURI(_retval);
   else if (colID.EqualsLiteral("colNodeType")) {
-    uint16_t nodeType;
-    domNode->GetNodeType(&nodeType);
+    uint16_t nodeType = domNode->NodeType();
     nsAutoString temp;
     temp.AppendInt(int32_t(nodeType));
     _retval = temp;