SingleClientVideoCaptureHost: Fix map re-entering bug.

Bug: 734672
Change-Id: Iad0f0ecb6c74ff2d49a48a46a6abe2cc0514767d
Reviewed-on: https://chromium-review.googlesource.com/1069798
Commit-Queue: Xiangjun Zhang <xjz@chromium.org>
Reviewed-by: Yuri Wiitala <miu@chromium.org>
Cr-Commit-Position: refs/heads/master@{#561153}
2 files changed