Navigation transitions (web to native app): Clear navigation transition data
For web to web navigation transition, the data is cleared
in RenderFrameHostManager::ResumeResponseDeferredAtStart().
For web to native app navigation transition, it will never
reach that point because no actual URL request was sent
out. In this case, clank side will call to clear navigation
transition data when the user navigate back from the native
app.
BUG=370696
Review URL: https://codereview.chromium.org/
672973003
Cr-Commit-Position: refs/heads/master@{#301984}