GitLab

PepperFileSystemHost already inherits SupportsWeakPtr.
Hence, instead of creating a WeakPtrFactory instance to
access its weak pointer, we can directly use AsWeakPtr().

BUG=None

Change-Id: I97e716d9ceb479e02ae7b80ea77fe1eaf7bf28b0
Reviewed-on: https://chromium-review.googlesource.com/590342Reviewed-by: Bill Budge <bbudge@chromium.org>
Commit-Queue: SUCHIT AGRAWAL <a.suchit@chromium.org>
Cr-Commit-Position: refs/heads/master@{#490664}