The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e0ca3279b3b7ba5053a56f03fd57f7feb03d93ba

commit e0ca3279b3b7ba5053a56f03fd57f7feb03d93ba
Author: joedow <joedow@chromium.org>
Date: Fri May 05 14:37:02 2017

Fixing a crash in our native messaging host binaries

This CL fixes a crash which can occur if the native messaging pipeline is
torn down immediately after a message is sent.  The LogMessageHandler class
will run a messaging delegate and then attempt to update a member variable.
If the instance is destroyed, then an AV will occur.

The fix is to check if the instance is still alive using a WeakPtr skip the
member variable assignment if it has been torn down.

BUG= 718871 

Review-Url: https://codereview.chromium.org/2857983008
Cr-Commit-Position: refs/heads/master@{#469646}

[modify] https://crrev.com/e0ca3279b3b7ba5053a56f03fd57f7feb03d93ba/remoting/host/native_messaging/log_message_handler.cc

Requesting merge for crash fix which does not affect the Chrome Browser (Chrome Remote Desktop only).

Your change meets the bar and is auto-approved for M59. Please go ahead and merge the CL to branch 3071 manually. Please contact milestone owner if you have questions.
Owners: amineer@(Android), cmasso@(iOS), gkihumba@(ChromeOS), Abdul Syed@(Desktop)

For more details visit https://www.chromium.org/issue-tracking/autotriage - Your friendly Sheriffbot

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/13d77cbc3998a37f2a8e895831af67e7c0bf3752

commit 13d77cbc3998a37f2a8e895831af67e7c0bf3752
Author: Joe Downing <joedow@chromium.org>
Date: Sat May 06 23:12:37 2017

Fixing a crash in our native messaging host binaries

This CL fixes a crash which can occur if the native messaging pipeline is
torn down immediately after a message is sent.  The LogMessageHandler class
will run a messaging delegate and then attempt to update a member variable.
If the instance is destroyed, then an AV will occur.

The fix is to check if the instance is still alive using a WeakPtr skip the
member variable assignment if it has been torn down.

BUG= 718871 

Review-Url: https://codereview.chromium.org/2857983008
Cr-Commit-Position: refs/heads/master@{#469646}
(cherry picked from commit e0ca3279b3b7ba5053a56f03fd57f7feb03d93ba)

Review-Url: https://codereview.chromium.org/2867623002 .
Cr-Commit-Position: refs/branch-heads/3071@{#434}
Cr-Branched-From: a106f0abbf69dad349d4aaf4bcc4f5d376dd2377-refs/heads/master@{#464641}

[modify] https://crrev.com/13d77cbc3998a37f2a8e895831af67e7c0bf3752/remoting/host/native_messaging/log_message_handler.cc

Fixed in M60 and merged back to M59.

Verified Fixed in Host version 59.0.3071.47.