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This makes it so that ShouldUpdateHistory() returns false for
same document navigations to the same url without a user gesture. A
common use of this history.replaceState(), which we don't really want
logged to history as it's not really what the user thinks of as a
navigation.

BUG=1103495
TEST=HistoryBrowserTest.ReplaceStateSamePageIsNotRecorded

Change-Id: Iafc0c7b93298940eb76cd1ca93ba7ffe3b2d32df
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2305236
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Charlie Reis <creis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#790424}