Move file chooser from RenderView(Host) to RenderFrame(Host).
The file chooser does not work with out-of-process iframes, since it works through RenderView(Host). It needs to be moved to user RenderFrame(Host) at which point it works for subframes in a process different from its parent.
BUG=615575
CQ_INCLUDE_TRYBOTS=tryserver.chromium.linux:linux_site_isolation
TBR=asvitkine@chromium.org
Review-Url: https://codereview.chromium.org/2050623005
Cr-Commit-Position: refs/heads/master@{#399373}
31 files changed
