[Mac] Add a preference for the tab key cycling between just form fields, or links as well.

chrome/browser/options_util.cc

Index: chrome/browser/options_util.cc
diff --git a/chrome/browser/options_util.cc b/chrome/browser/options_util.cc
index d1c7c964da4f5560fd6d7001e825a5acc7511831..b4c5c9ac208759104e57f9ddf643530a2acfd5fa 100644
--- a/chrome/browser/options_util.cc
+++ b/chrome/browser/options_util.cc
@@ -66,6 +66,7 @@ void OptionsUtil::ResetToDefaults(Profile* profile) {
     prefs::kWebKitPluginsEnabled,
     prefs::kWebKitSansSerifFontFamily,
     prefs::kWebKitSerifFontFamily,
+    prefs::kWebkitTabsToLinks,
   };
   profile->GetDownloadManager()->ResetAutoOpenFiles();
   profile->GetHostContentSettingsMap()->ResetToDefaults();