Mac: Prevent NTP mousewheel events from being suppressed on Lion.

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

Index: chrome/browser/ui/webui/ntp/ntp_resource_cache.h
diff --git a/chrome/browser/ui/webui/ntp/ntp_resource_cache.h b/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
index 08f95643cfee4df4fb9f6dce41380a9181604fb9..6fd3c8bdbabc02d8d7c162d467b5b40af48fd247 100644
--- a/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
+++ b/chrome/browser/ui/webui/ntp/ntp_resource_cache.h
@@ -40,6 +40,11 @@ class NTPResourceCache : public content::NotificationObserver,
   void CreateNewTabHTML();
   scoped_refptr<RefCountedMemory> new_tab_html_;
 
+  // Helper to determine if the resource cache should be invalidated.
+  // This is called on every page load, and can be used to check values that
+  // don't generate a notification when changed (e.g., system preferences).
+  bool NewTabCacheNeedsRefresh();
+
 #if !defined(OS_ANDROID)
   // Returns a message describing any newly-added sync types, or an empty
   // string if all types have already been acknowledged.
@@ -57,6 +62,8 @@ class NTPResourceCache : public content::NotificationObserver,
   PrefChangeRegistrar pref_change_registrar_;
 #endif
 
+  bool is_swipe_tracking_from_scroll_events_enabled_;
+
   DISALLOW_COPY_AND_ASSIGN(NTPResourceCache);
 };