ortuno@, could you please take a look? (I see that you've modified bluetooth/characteristicvaluechanged.html yesterday in https://codereview.chromium.org/1815483003)

Bumping up priority, since this problem makes one of the bots red.

We are in the process of refactoring our tests. I believe that will fix the problem.

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/47e15c538f5c24300e6a02bd71016ba70ae5a0a3

commit 47e15c538f5c24300e6a02bd71016ba70ae5a0a3
Author: ortuno <ortuno@chromium.org>
Date: Mon Apr 04 20:18:21 2016

bluetooth: Remove disconnect when page hidden

Also removes the permission check when disconnecting. This stops the renderer
crashing when the renderer tries to disconnect a device after a test has
finished and the browser state has been cleared.

BUG= 554240 , 600014 , 579746 

Review URL: https://codereview.chromium.org/1859463002

Cr-Commit-Position: refs/heads/master@{#384989}

[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/content/browser/bluetooth/bluetooth_dispatcher_host.cc
[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/third_party/WebKit/LayoutTests/bluetooth/connect.html
[delete] https://crrev.com/276dc49243e685b85adbadf2f63decc0509bd3c3/third_party/WebKit/LayoutTests/bluetooth/disconnect-when-hidden-or-closed.html
[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/third_party/WebKit/LayoutTests/bluetooth/resources/bluetooth-helpers.js
[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.cpp
[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/third_party/WebKit/Source/modules/bluetooth/BluetoothDevice.h
[modify] https://crrev.com/47e15c538f5c24300e6a02bd71016ba70ae5a0a3/third_party/WebKit/Source/modules/bluetooth/BluetoothRemoteGATTServer.cpp