Change hints manager to use NavigationData

Replace  NavigationData in OptGuide hints manager to use the abstracted
OptimizationGuideNavigationData. Also adds navigation URL to this abstract
NavigationData and populates it on navigation starts and redirects.

Bug: 1232862
Change-Id: I64338b10ff0036bd36dabbbef0e4bf2a0ab1bf95
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3059505


Commit-Queue: rajendrant <rajendrant@chromium.org>
Reviewed-by: Sophie Chang <sophiechang@chromium.org>
Reviewed-by: Robert Ogden <robertogden@chromium.org>
Cr-Commit-Position: refs/heads/master@{#908293}