Rename RequestNavigationParams to CommitNavigationParams.

Historically, the struct RequestNavigationParams was introduced during
the development of PlzNavigate navigation code (now the only navigation
code). It made a lot more sense initially for this struct to be named
like that, however as the codebase has evolved, it no longer makes as
much sense. It is much more correct to be named CommitNavigationParams
as it carries parameters needed to commit a navigation.
This CL carries out this rename across the codebase.

Change-Id: Icdfbda7d3d3f337ad3d8730efe5d3cc94822286f
Reviewed-on: https://chromium-review.googlesource.com/c/1394825
Commit-Queue: Nasko Oskov <[email protected]>
Reviewed-by: Alex Moshchuk <[email protected]>
Cr-Commit-Position: refs/heads/master@{#619800}
33 files changed