cros: Turn on close() tracking on dev

chrome/browser/chromeos/chrome_browser_main_chromeos.cc

Index: chrome/browser/chromeos/chrome_browser_main_chromeos.cc
diff --git a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
index dff8332fdd420c5cf34b5d3e200e4faa1a295cbf..dfdc97aa04b09060c579bed86d3e362143009652 100644
--- a/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
+++ b/chrome/browser/chromeos/chrome_browser_main_chromeos.cc
@@ -372,7 +372,8 @@ void ChromeBrowserMainPartsChromeos::PreEarlyInitialization() {
   // Enable libc close tracking in browser process on unknown/canary channel for

[Daniel Erat, 2017/02/14 23:01:11]

nit: update this comment (maybe to omit the channel names, since it's obvious
what it's doing from the code):

// Crash on libc double-close() to try to track down bugs:
http://crbug.com/660960

[xiyuan, 2017/02/14 23:32:42]

Good point. Done.

   // http://crbug.com/660960.
   // TODO(xiyuan): Remove this.
-  if (chrome::GetChannel() == version_info::Channel::CANARY ||
+  if (chrome::GetChannel() == version_info::Channel::DEV ||
+      chrome::GetChannel() == version_info::Channel::CANARY ||
       chrome::GetChannel() == version_info::Channel::UNKNOWN) {
     chromeos::InitCloseTracking();
   }