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

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

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_UI_WEBUI_NTP_NTP_RESOURCE_CACHE_H_
 #define CHROME_BROWSER_UI_WEBUI_NTP_NTP_RESOURCE_CACHE_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/ref_counted.h"
 #include "base/string16.h"
 #include "chrome/browser/prefs/pref_change_registrar.h"
 #include "chrome/browser/profiles/profile_keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 
 class Profile;
 class RefCountedMemory;
 
 // This class keeps a cache of NTP resources (HTML and CSS) so we don't have to
 // regenerate them all the time.
 class NTPResourceCache : public content::NotificationObserver,
                          public ProfileKeyedService {
  public:
   explicit NTPResourceCache(Profile* profile);
   virtual ~NTPResourceCache();
 
+  // 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 InvalidateNewTabCache();
+
   RefCountedMemory* GetNewTabHTML(bool is_incognito);
   RefCountedMemory* GetNewTabCSS(bool is_incognito);
 
   // content::NotificationObserver interface.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
  private:
   Profile* profile_;
@@ skipping 11 matching lines @@
 
   void CreateNewTabIncognitoCSS();
   scoped_refptr<RefCountedMemory> new_tab_incognito_css_;
   void CreateNewTabCSS();
   scoped_refptr<RefCountedMemory> new_tab_css_;
 
   content::NotificationRegistrar registrar_;
   PrefChangeRegistrar pref_change_registrar_;
 #endif
 
+  bool isSwipeTrackingFromScrollEventsEnabled_;

[Evan Stade, 2012/04/17 21:29:53]

comment (this is where I'd put the comment that you have in GetLocalizedStrings)

also c hacker style, not javascript style

[Patrick Dubroy, 2012/04/18 14:43:06]

Done.

+
   DISALLOW_COPY_AND_ASSIGN(NTPResourceCache);
 };
 
 #endif  // CHROME_BROWSER_UI_WEBUI_NTP_NTP_RESOURCE_CACHE_H_