Bug 1419144 - Part 19: Move IsRootOuterWindow to nsPIDOMWindowOuter, r=smaug

MozReview-Commit-ID: Cgh1Cbb60Zk

dom/base/nsPIDOMWindow.h

@@ -152,12 +152,6 @@ public:
   virtual nsPIDOMWindowOuter* GetScriptableParent() = 0;
   virtual already_AddRefed<nsPIWindowRoot> GetTopWindowRoot() = 0;
 
-  bool IsRootOuterWindow()
-  {
-    MOZ_ASSERT(IsOuterWindow());
-    return mIsRootOuterWindow;
-  }
-
   /**
    * Behavies identically to GetScriptableParent extept that it returns null
    * if GetScriptableParent would return this window.
@@ -993,6 +987,12 @@ public:
     return GetCurrentInnerWindow();
   }
 
+  bool IsRootOuterWindow()
+  {
+    MOZ_ASSERT(IsOuterWindow());
+    return mIsRootOuterWindow;
+  }
+
   /**
    * Set initial keyboard indicator state for accelerators and focus rings.
    */