Bug 1505029. Teach our static analysis about nsCOMPtr<nsISupports> being a strong ref. r=mccr8

Differential Revision: https://phabricator.services.mozilla.com/D23021

--HG--
extra : moz-landing-system : lando

editor/libeditor/HTMLEditor.h

@@ -1940,7 +1940,7 @@ class HTMLEditor final : public TextEditor,
   /**
    * InsertObject() inserts given object at aPointToInsert.
    */
-  MOZ_CAN_RUN_SCRIPT_BOUNDARY
+  MOZ_CAN_RUN_SCRIPT
   nsresult InsertObject(const nsACString& aType, nsISupports* aObject,
                         bool aIsSafe, Document* aSourceDoc,
                         const EditorDOMPoint& aPointToInsert,

xpcom/base/nsCOMPtr.h

@@ -875,7 +875,7 @@ class MOZ_IS_REFPTR nsCOMPtr final
  * intermediary code that doesn't know the exact type.
  */
 template <>
-class nsCOMPtr<nsISupports> : private nsCOMPtr_base {
+class MOZ_IS_REFPTR nsCOMPtr<nsISupports> : private nsCOMPtr_base {
  public:
   typedef nsISupports element_type;