--- a/content/base/public/Element.h
+++ b/content/base/public/Element.h
@@ -128,18 +128,18 @@ class AnimationPlayer;
 class Link;
 class UndoManager;
 class DOMRect;
 class DOMRectList;
 class DestinationInsertionPointList;
 
 // IID for the dom::Element interface
 #define NS_ELEMENT_IID \
-{ 0xb0135f9d, 0xa476, 0x4711, \
-  { 0x8b, 0xb9, 0xca, 0xe5, 0x2a, 0x05, 0xf9, 0xbe } }
+{ 0xaa79cb98, 0xc785, 0x44c5, \
+  { 0x80, 0x80, 0x2e, 0x5f, 0x0c, 0xa5, 0xbd, 0x63 } }
 
 class Element : public FragmentOrElement
 {
 public:
 #ifdef MOZILLA_INTERNAL_API
   explicit Element(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo) :
     FragmentOrElement(aNodeInfo),
     mState(NS_EVENT_STATE_MOZ_READONLY)

--- a/content/base/public/nsINode.h
+++ b/content/base/public/nsINode.h
@@ -243,18 +243,18 @@ private:
 
 // Categories of node properties
 // 0 is global.
 #define DOM_USER_DATA         1
 #define SMIL_MAPPED_ATTR_ANIMVAL 2
 
 // IID for the nsINode interface
 #define NS_INODE_IID \
-{ 0x3a60353e, 0x04e5, 0x49ca, \
-  { 0x84, 0x1c, 0x59, 0xc6, 0xde, 0xe6, 0x36, 0xcc } }
+{ 0x8deda3f4, 0x0f45, 0x497a, \
+  { 0x89, 0x7c, 0xe6, 0x09, 0x12, 0x8a, 0xad, 0xd8 } }
 
 /**
  * An internal interface that abstracts some DOMNode-related parts that both
  * nsIContent and nsIDocument share.  An instance of this interface has a list
  * of nsIContent children and provides access to them.
  */
 class nsINode : public mozilla::dom::EventTarget
 {