Add an experimental flag for offlining.

components/offline_pages/offline_page_feature.cc

Index: components/offline_pages/offline_page_feature.cc
diff --git a/components/offline_pages/offline_page_feature.cc b/components/offline_pages/offline_page_feature.cc
index 159ea9a862f6db89d208778a5a52178b0940b372..766a5d6f4a42f5bdf78b58648e138da0d10db975 100644
--- a/components/offline_pages/offline_page_feature.cc
+++ b/components/offline_pages/offline_page_feature.cc
@@ -22,6 +22,10 @@ const base::Feature kOfflinePagesBackgroundLoadingFeature {
    "OfflinePagesBackgroundLoading", base::FEATURE_DISABLED_BY_DEFAULT
 };
 
+const base::Feature kOfflineExperimentalFeature {
+   "OfflinePagesExperimental", base::FEATURE_DISABLED_BY_DEFAULT
+};
+
 bool IsOfflinePagesEnabled() {
   return IsOfflineBookmarksEnabled() || IsOffliningRecentPagesEnabled() ||
          IsOfflinePagesBackgroundLoadingEnabled();

[jianli, 2016/06/15 23:28:49]

Add the check here.

[dewittj, 2016/06/16 18:38:07]

Done.

@@ -39,4 +43,8 @@ bool IsOfflinePagesBackgroundLoadingEnabled() {
   return base::FeatureList::IsEnabled(kOfflinePagesBackgroundLoadingFeature);
 }
 
+bool IsOfflineExperimentalEnabled() {
+  return base::FeatureList::IsEnabled(kOfflineExperimentalFeature);
+}
+
 }  // namespace offline_pages