Clear cache after showing Sync confirmation bubble

chrome/browser/ui/webui/ntp/ntp_resource_cache.cc

Index: chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
diff --git a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
index f34bd5a13e4bad9c2f3f289753b72d3cddb930d6..e98317547a937e555d3e6e17d0de2bd197e40581 100644
--- a/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
+++ b/chrome/browser/ui/webui/ntp/ntp_resource_cache.cc
@@ -176,6 +176,8 @@ NTPResourceCache::NTPResourceCache(Profile* profile) : profile_(profile) {
                  content::NotificationService::AllSources());
   registrar_.Add(this, chrome::NTP4_INTRO_PREF_CHANGED,
                  content::NotificationService::AllSources());
+  registrar_.Add(this, chrome::NTP4_SYNC_PROMO_SHOW_NTP_BUBBLE_CHANGED,
+                 content::NotificationService::AllSources());
 
   // Watch for pref changes that cause us to need to invalidate the HTML cache.
   pref_change_registrar_.Init(profile_->GetPrefs());
@@ -217,20 +219,25 @@ void NTPResourceCache::Observe(int type,
     const content::NotificationSource& source,
     const content::NotificationDetails& details) {
   // Invalidate the cache.
-  if (chrome::NOTIFICATION_BROWSER_THEME_CHANGED == type ||
-      chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED == type) {
-    new_tab_incognito_html_ = NULL;
-    new_tab_html_ = NULL;
-    new_tab_incognito_css_ = NULL;
-    new_tab_css_ = NULL;
-  } else if (chrome::NOTIFICATION_PREF_CHANGED == type ||
-              chrome::NTP4_INTRO_PREF_CHANGED) {
-    // A change occurred to one of the preferences we care about, so flush the
-    // cache.
-    new_tab_incognito_html_ = NULL;
-    new_tab_html_ = NULL;
-  } else {
-    NOTREACHED();
+  switch (type) {
+    case chrome::NOTIFICATION_BROWSER_THEME_CHANGED:
+    case chrome::NOTIFICATION_PROMO_RESOURCE_STATE_CHANGED:
+      new_tab_incognito_html_ = NULL;
+      new_tab_html_ = NULL;
+      new_tab_incognito_css_ = NULL;
+      new_tab_css_ = NULL;
+      break;
+    case chrome::NOTIFICATION_PREF_CHANGED:
+    case chrome::NTP4_INTRO_PREF_CHANGED:
+    case chrome::NTP4_SYNC_PROMO_SHOW_NTP_BUBBLE_CHANGED:
+      // A change occurred to one of the preferences we care about, so flush the
+      // cache.
+      new_tab_incognito_html_ = NULL;
+      new_tab_html_ = NULL;
+      break;
+    default:
+      NOTREACHED();
+      break;
   }
 }