Fix a chrome browser crash observed in chrome frame reliability test runs. The crash occurs
when the automation channel is being torn down and a Send on the channel is attempted after
the channel has been closed. 

We crash while dereferencing a NULL channel pointer in OnSendMessage task.

Fix is to add a check for the same.

Fixes bug http://code.google.com/p/chromium/issues/detail?can=2&q=54115

Bug=54115
Test=Covered by new ipc sync channel test.

Review URL: http://codereview.chromium.org/3337004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@58408 0039d316-1c4b-4281-b951-d872f2087c98


CrOS-Libchrome-Original-Commit: 87339f0bdb7fa60bad0616348a6a2aa705d4716a
3 files changed
tree: 2428bc934a949a13964c07788abca9a681a69bfd
  1. base/
  2. build/
  3. ipc/
  4. testing/