Spelling fix from r675702.

Bug: 980937
Change-Id: I7c29a1820e1ce2df735284c430883a3250d7d044
Tbr: dcheng@chromium.org
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1692488Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Commit-Queue: Jeremy Roman <jbroman@chromium.org>
Cr-Commit-Position: refs/heads/master@{#675780}

third_party/blink/public/web/web_local_frame_client.h

@@ -230,7 +230,7 @@ class BLINK_EXPORT WebLocalFrameClient {
   virtual std::pair<WebRemoteFrame*, base::UnguessableToken> CreatePortal(
       mojo::ScopedInterfaceEndpointHandle portal_endpoint,
       mojo::ScopedInterfaceEndpointHandle client_endpoint,
-      const WebElement& protal_element) {
+      const WebElement& portal_element) {
     return std::pair<WebRemoteFrame*, base::UnguessableToken>(
         nullptr, base::UnguessableToken());
   }