Bug 615745 - Make CookieServiceChild add strong pref observers. r=dwitte a=blocking-fennec

netwerk/cookie/CookieServiceChild.cpp

@@ -67,7 +67,10 @@ CookieServiceChild::GetSingleton()
   return gCookieService;
 }
 
-NS_IMPL_ISUPPORTS2(CookieServiceChild, nsICookieService, nsIObserver)
+NS_IMPL_ISUPPORTS3(CookieServiceChild,
+                   nsICookieService,
+                   nsIObserver,
+                   nsISupportsWeakReference)
 
 CookieServiceChild::CookieServiceChild()
   : mCookieBehavior(BEHAVIOR_ACCEPT)

netwerk/cookie/CookieServiceChild.h

@@ -44,6 +44,7 @@
 #include "nsIObserver.h"
 #include "nsIPrefBranch.h"
 #include "mozIThirdPartyUtil.h"
+#include "nsWeakReference.h"
 
 namespace mozilla {
 namespace net {
@@ -51,6 +52,7 @@ namespace net {
 class CookieServiceChild : public PCookieServiceChild
                          , public nsICookieService
                          , public nsIObserver
+                         , public nsSupportsWeakReference
 {
 public:
   NS_DECL_ISUPPORTS