CrOS: Add print statements to help debug BrowserProcessImpl::Unpin crash.

chrome/browser/notifications/profile_notification.cc

Index: chrome/browser/notifications/profile_notification.cc
diff --git a/chrome/browser/notifications/profile_notification.cc b/chrome/browser/notifications/profile_notification.cc
index b9814449b3590b5f3040c8c6a4aa0ae8a1c3799f..e500bda0f2c589371402d54c0da16d56ad196f93 100644
--- a/chrome/browser/notifications/profile_notification.cc
+++ b/chrome/browser/notifications/profile_notification.cc
@@ -6,10 +6,12 @@
 
 #include "base/strings/stringprintf.h"
 #include "build/build_config.h"
+#include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/lifetime/keep_alive_types.h"
 #include "chrome/browser/lifetime/scoped_keep_alive.h"
 #include "chrome/browser/ui/ash/multi_user/multi_user_util.h"
 #include "components/signin/core/account_id/account_id.h"
+#include "content/public/browser/notification_service.h"
 
 // static
 std::string ProfileNotification::GetProfileNotificationId(
@@ -39,6 +41,26 @@ ProfileNotification::ProfileNotification(Profile* profile,
   notification_.set_profile_id(
       multi_user_util::GetAccountIdFromProfile(profile).GetUserEmail());
 #endif
+
+  registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
+                 content::NotificationService::AllSources());
+  registrar_.Add(this, chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
+                 content::NotificationService::AllSources());
 }
 
 ProfileNotification::~ProfileNotification() {}
+
+void ProfileNotification::Observe(int type,
+                                  const content::NotificationSource& source,
+                                  const content::NotificationDetails& details) {
+  switch (type) {
+    case chrome::NOTIFICATION_APP_TERMINATING: {
+      DVLOG(1) << "ProfileNotification Terminating";

[dgn, 2017/03/20 11:07:22]

Shouldn't that be a VLOG rather than DVLOG? Otherwise the statement is compiled
out in release build and the vmodule flags won't do anything anyway?

(e.g. here they use vlogs:
https://cs.chromium.org/chromium/src/components/arc/arc_session.cc?type=cs&q=...)

[sammiequon, 2017/03/20 17:20:06]

Done.

+      break;
+    }
+    case chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST: {
+      DVLOG(1) << "ProfileNotification Close All Browsers Request";
+      break;
+    }
+  }
+}