Make WebViewGuest::LoadURLWithParams also take a GlobalRequestID param.

This param can be used to construct "transferred_global_request_id"
field of NavigationController::LoadURLParams.
Currently this is no-op but this is a requirement for OOPIF based
<webview> implementation.

BUG=330264
Test=None, internal change.

Review URL: https://codereview.chromium.org/1202523004

Cr-Commit-Position: refs/heads/master@{#335638}
2 files changed