Bug 1811822 - nsFrameLoader::LoadContext() may return null, yet the webidl binding doesn't expect that., r=peterv

Differential Revision: https://phabricator.services.mozilla.com/D167534

dom/base/nsFrameLoader.cpp

@@ -3478,7 +3478,7 @@ already_AddRefed<nsIRemoteTab> nsFrameLoader::GetRemoteTab() {
   return nullptr;
 }
 
-already_AddRefed<nsILoadContext> nsFrameLoader::LoadContext() {
+already_AddRefed<nsILoadContext> nsFrameLoader::GetLoadContext() {
   return do_AddRef(GetBrowsingContext());
 }
 

dom/base/nsFrameLoader.h

@@ -169,7 +169,7 @@ class nsFrameLoader final : public nsStubMutationObserver,
 
   already_AddRefed<nsIRemoteTab> GetRemoteTab();
 
-  already_AddRefed<nsILoadContext> LoadContext();
+  already_AddRefed<nsILoadContext> GetLoadContext();
 
   mozilla::dom::BrowsingContext* GetBrowsingContext();
   mozilla::dom::BrowsingContext* GetExtantBrowsingContext();

dom/chrome-webidl/FrameLoader.webidl

@@ -32,7 +32,7 @@ interface FrameLoader {
    * frames, a shim is returned that contains private browsing and app
    * information.
    */
-  readonly attribute LoadContext loadContext;
+  readonly attribute LoadContext? loadContext;
 
   /**
    * Get the root BrowsingContext within the frame.