Bug 935778 - Part 0.1: Uninline nsIPresShell::SetForwardingContainer so that it won't need the full definition of nsDocShell; r=bzbarsky

layout/base/nsIPresShell.h

@@ -976,10 +976,7 @@ public:
    * user events at the docshell's parent.  This pointer allows us to do that.
    * It should not be used for any other purpose.
    */
-  void SetForwardingContainer(const mozilla::WeakPtr<nsDocShell> &aContainer)
-  {
-    mForwardingContainer = aContainer;
-  }
+  void SetForwardingContainer(const mozilla::WeakPtr<nsDocShell> &aContainer);
 
   /**
    * Render the document into an arbitrary gfxContext

layout/base/nsPresShell.cpp

@@ -2863,6 +2863,12 @@ nsIPresShell::RestyleForAnimation(Element* aElement, nsRestyleHint aHint)
                                                             NS_STYLE_HINT_NONE);
 }
 
+void
+nsIPresShell::SetForwardingContainer(const WeakPtr<nsDocShell> &aContainer)
+{
+  mForwardingContainer = aContainer;
+}
+
 void
 PresShell::ClearFrameRefs(nsIFrame* aFrame)
 {