commit 2d0ddb393c09c26c3d225bed0a005ee8ec76cc57
author zqzhang <zqzhang@chromium.org> Thu Feb 23 22:08:25 2017
committer Commit bot <commit-bot@chromium.org> Thu Feb 23 22:08:25 2017
tree 68f8982643ddd36be589f84b0e372a53c43c6079
parent 8e0074effadf2beceb5df755b7e61ef095cde7a1

Fix a crash in MediaSessionServiceImpl due to life time issue

Previously we assume MediaSessionServiceImpl is owned by RenderFrameHost
and will be destroyed as RenderFrameHost is destroyed. However this does
not stand and MediaSessionServiceImpl may outlive RenderFrameHost.
Therefore it is unsafe to keep a raw RenderFrameHost pointer in
MediaSessionServiceImpl.

This CL fixes a crash due to this issue.

BUG=695398

Review-Url: https://codereview.chromium.org/2715723002
Cr-Commit-Position: refs/heads/master@{#452649}