Rename Origin.unique() to opaque().

extensions/browser/extension_web_contents_observer.cc

Index: extensions/browser/extension_web_contents_observer.cc
diff --git a/extensions/browser/extension_web_contents_observer.cc b/extensions/browser/extension_web_contents_observer.cc
index 0364f078e897aaf6e19a64c1fbb7e7b6f1225a7f..3fd73182f4fd5dc57b0d9fea5b67d53bc80e6145 100644
--- a/extensions/browser/extension_web_contents_observer.cc
+++ b/extensions/browser/extension_web_contents_observer.cc
@@ -226,10 +226,9 @@ const Extension* ExtensionWebContentsObserver::GetExtensionFromFrame(
     const url::Origin& origin(render_frame_host->GetLastCommittedOrigin());
     // Without site isolation, this check is needed to eliminate non-extension
     // schemes. With site isolation, this is still needed to exclude sandboxed
-    // extension frames with a unique origin.
-    if (origin.unique() ||
-        site_url != content::SiteInstance::GetSiteForURL(browser_context,
-                                                         origin.GetURL()))
+    // extension frames with an opaque origin.
+    if (origin.opaque() || site_url != content::SiteInstance::GetSiteForURL(
+                                           browser_context, origin.GetURL()))
       return nullptr;
   }