Deploy more smart pointers in WebProcessCocoa.mm

https://bugs.webkit.org/show_bug.cgi?id=260231

Reviewed by Dan Glastonbury.

Use smart pointers in more places.

* Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm:
(WebKit::WebProcess::accessibilityFocusedUIElement):
(WebKit::origin):
(WebKit::WebProcess::transformHandlesToObjects):
(WebKit::WebProcess::transformObjectsToHandles):

Canonical link: https://commits.webkit.org/266934@main

Source/WebKit/WebProcess/cocoa/WebProcessCocoa.mm

@@ -236,7 +236,7 @@
     }
 #endif
 
-    WebPage* page = WebProcess::singleton().focusedWebPage();
+    RefPtr page = WebProcess::singleton().focusedWebPage();
     if (!page || !page->accessibilityRemoteObject())
         return nil;
     return [page->accessibilityRemoteObject() accessibilityFocusedUIElement];
@@ -904,9 +904,9 @@ static void registerLogHook()
 
 static NSURL *origin(WebPage& page)
 {
-    auto& mainFrame = page.mainWebFrame();
+    Ref mainFrame = page.mainWebFrame();
 
-    URL mainFrameURL = mainFrame.url();
+    URL mainFrameURL = mainFrame->url();
     Ref<SecurityOrigin> mainFrameOrigin = SecurityOrigin::create(mainFrameURL);
     String mainFrameOriginString;
     if (!mainFrameOrigin->isOpaque())
@@ -1064,8 +1064,11 @@ bool shouldTransformObject(id object) const override
             }
 
 ALLOW_DEPRECATED_DECLARATIONS_BEGIN
-            if (auto* wrapper = dynamic_objc_cast<WKTypeRefWrapper>(object))
-                return adoptNS([[WKTypeRefWrapper alloc] initWithObject:toAPI(WebProcess::singleton().transformHandlesToObjects(toImpl(wrapper.object)).get())]);
+            if (auto* wrapper = dynamic_objc_cast<WKTypeRefWrapper>(object)) {
+                RefPtr impl = toImpl(wrapper.object);
+                return adoptNS([[WKTypeRefWrapper alloc] initWithObject:toAPI(WebProcess::singleton().transformHandlesToObjects(impl.get()).get())]);
+            }
+
 ALLOW_DEPRECATED_DECLARATIONS_END
             return object;
         }
@@ -1095,8 +1098,10 @@ bool shouldTransformObject(id object) const override
                 return controller.handle;
 
 ALLOW_DEPRECATED_DECLARATIONS_BEGIN
-            if (auto* wrapper = dynamic_objc_cast<WKTypeRefWrapper>(object))
-                return adoptNS([[WKTypeRefWrapper alloc] initWithObject:toAPI(transformObjectsToHandles(toImpl(wrapper.object)).get())]);
+            if (auto* wrapper = dynamic_objc_cast<WKTypeRefWrapper>(object)) {
+                RefPtr impl = toImpl(wrapper.object);
+                return adoptNS([[WKTypeRefWrapper alloc] initWithObject:toAPI(transformObjectsToHandles(impl.get()).get())]);
+            }
 ALLOW_DEPRECATED_DECLARATIONS_END
             return object;
         }