GitLab

ChromeExtensionsRendererClient::CreateBrowserPluginDelegate is not
called. This method has the only ctors for ExtensionGuestViewContainer
and MimeHandlerViewContainer classes, so those classes can be deleted.

GuestViewMsg_GuestAttached and ExtensionsGuestViewHostMsg_ResizeGuest
are IPC messages that are only sent/received by those classes so those
messages can also be removed.

BUG=533069

Change-Id: Ie904cfdd01db9980a4286be6a79e94e2eb83374f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2635797
Commit-Queue: Dave Tapuska <dtapuska@chromium.org>
Reviewed-by: Reilly Grant <reillyg@chromium.org>
Reviewed-by: Avi Drissman <avi@chromium.org>
Reviewed-by: Ken Buchanan <kenrb@chromium.org>
Reviewed-by: Kevin McNee <mcnee@chromium.org>
Cr-Commit-Position: refs/heads/master@{#846190}