Adds a first-run balloon to the Windows notification center.

chrome/browser/ui/views/message_center/web_notification_tray.cc

Index: chrome/browser/ui/views/message_center/web_notification_tray.cc
diff --git a/chrome/browser/ui/views/message_center/web_notification_tray.cc b/chrome/browser/ui/views/message_center/web_notification_tray.cc
index 77a79db0edd353d3ed4e2047de6c220d23dc79bb..53b8a1c4d069a26028c1279eed2e35e98993977b 100644
--- a/chrome/browser/ui/views/message_center/web_notification_tray.cc
+++ b/chrome/browser/ui/views/message_center/web_notification_tray.cc
@@ -8,9 +8,14 @@
 #include "base/strings/string16.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
+#include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/status_icons/status_icon.h"
 #include "chrome/browser/status_icons/status_tray.h"
+#include "chrome/browser/ui/browser_finder.h"
+#include "chrome/browser/ui/host_desktop.h"
+#include "chrome/browser/ui/singleton_tabs.h"
 #include "chrome/browser/ui/views/message_center/notification_bubble_wrapper.h"
+#include "chrome/common/url_constants.h"
 #include "content/public/browser/user_metrics.h"
 #include "grit/chromium_strings.h"
 #include "grit/theme_resources.h"
@@ -30,10 +35,6 @@
 #include "ui/message_center/views/message_popup_collection.h"
 #include "ui/views/widget/widget.h"
 
-#if defined(OS_WIN)
-#include "ui/base/win/hwnd_util.h"
-#endif
-
 namespace {
 
 // Tray constants
@@ -277,6 +278,13 @@ void WebNotificationTray::OnStatusIconClicked() {
   message_center_tray_->ToggleMessageCenterBubble();
 }
 
+void WebNotificationTray::OnBalloonClicked() {
+  Browser* browser = chrome::FindOrCreateTabbedBrowser(
+      ProfileManager::GetLastUsedProfileAllowedByPolicy(),
+      chrome::GetActiveDesktop());
+  chrome::ShowSingletonTab(browser, GURL(chrome::kNotificationsHelpURL));
+}
+
 void WebNotificationTray::HideBubbleWithView(
     const views::TrayBubbleView* bubble_view) {
   if (message_center_bubble_.get() &&