Remove unused APIs on the WebLocalFrame/Client interfaces

Change-Id: I6a91ea0021077507e968ce2be0adde5588118d74
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2010169
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Cr-Commit-Position: refs/heads/master@{#733389}
4 files changed