Removed NOTIFICATION_BROWSER_CLOSING notification

chrome/browser/ui/tabs/pinned_tab_service.cc

Index: chrome/browser/ui/tabs/pinned_tab_service.cc
diff --git a/chrome/browser/ui/tabs/pinned_tab_service.cc b/chrome/browser/ui/tabs/pinned_tab_service.cc
index 5f56a5ecf9a5c511250eb07a09b41f2f46188a2a..be00f58798398de11a33e4ae8f6a54f86674d958 100644
--- a/chrome/browser/ui/tabs/pinned_tab_service.cc
+++ b/chrome/browser/ui/tabs/pinned_tab_service.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
+#include "chrome/browser/ui/browser_list_observer.h"
 #include "chrome/browser/ui/tabs/pinned_tab_codec.h"
 #include "content/public/browser/notification_service.h"
 
@@ -33,12 +34,11 @@ PinnedTabService::PinnedTabService(Profile* profile)
       has_normal_browser_(false) {
   registrar_.Add(this, chrome::NOTIFICATION_BROWSER_OPENED,
                  content::NotificationService::AllBrowserContextsAndSources());
-  registrar_.Add(this, chrome::NOTIFICATION_BROWSER_CLOSING,
-                 content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST,
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NOTIFICATION_TAB_ADDED,
                  content::NotificationService::AllSources());
+  BrowserList::AddObserver(this);
 }
 
 void PinnedTabService::Observe(int type,
@@ -77,18 +77,6 @@ void PinnedTabService::Observe(int type,
       break;
     }
 
-    case chrome::NOTIFICATION_BROWSER_CLOSING: {
-      Browser* browser = content::Source<Browser>(source).ptr();
-      if (has_normal_browser_ && save_pinned_tabs_ &&
-          browser->profile() == profile_) {
-        if (IsOnlyNormalBrowser(browser)) {
-          has_normal_browser_ = false;
-          PinnedTabCodec::WritePinnedTabs(profile_);
-        }
-      }
-      break;
-    }
-
     case chrome::NOTIFICATION_CLOSE_ALL_BROWSERS_REQUEST: {
       if (has_normal_browser_ && save_pinned_tabs_) {
         PinnedTabCodec::WritePinnedTabs(profile_);
@@ -101,3 +89,13 @@ void PinnedTabService::Observe(int type,
       NOTREACHED();
   }
 }
+
+void PinnedTabService::OnBrowserCloseStarted(Browser* browser) {
+  if (has_normal_browser_ && save_pinned_tabs_ &&
+      browser->profile() == profile_) {
+    if (IsOnlyNormalBrowser(browser)) {
+      has_normal_browser_ = false;
+      PinnedTabCodec::WritePinnedTabs(profile_);
+    }
+  }
+}