Replace more loading methods in WebLocalFrame

This patch renames Reload to StartReload (as opposite to Commit),
and LoadRequest to StartNavigation.

Multiple LoadRequest usages are migrated to either
CommitNavigation (if they mean it) or LoadHTMLString.

Bug: 789577
Change-Id: Ia58b00e08a6f31f3aa8e6e8f4357f4ad32271c1b
Reviewed-on: https://chromium-review.googlesource.com/1043093
Commit-Queue: Dmitry Gozman <dgozman@chromium.org>
Reviewed-by: Lei Zhang <thestig@chromium.org>
Reviewed-by: Camille Lamy <clamy@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#562099}
13 files changed