Offline Pages: Replace Observer::OfflinePageModelChanged with OfflinePageAdded.

components/ntp_snippets/offline_pages/offline_page_proxy.cc

Index: components/ntp_snippets/offline_pages/offline_page_proxy.cc
diff --git a/components/ntp_snippets/offline_pages/offline_page_proxy.cc b/components/ntp_snippets/offline_pages/offline_page_proxy.cc
index 81976ad82ab025b6341131d8c2673762e94cdf77..d041d8d73fa6ae091e8426f15dd48032758326f7 100644
--- a/components/ntp_snippets/offline_pages/offline_page_proxy.cc
+++ b/components/ntp_snippets/offline_pages/offline_page_proxy.cc
@@ -6,9 +6,11 @@
 
 #include "base/bind.h"
 
-using offline_pages::MultipleOfflinePageItemResult;
 using offline_pages::MultipleOfflinePageItemCallback;
+using offline_pages::MultipleOfflinePageItemResult;
+using offline_pages::OfflinePageItem;
 using offline_pages::OfflinePageModel;
+using SavePageResult = offline_pages::SavePageResult;
 
 namespace ntp_snippets {
 
@@ -41,7 +43,9 @@ void OfflinePageProxy::OfflinePageModelLoaded(OfflinePageModel* model) {
   DCHECK_EQ(offline_page_model_, model);
 }
 
-void OfflinePageProxy::OfflinePageModelChanged(OfflinePageModel* model) {
+void OfflinePageProxy::OfflinePageAdded(OfflinePageModel* model,

[fgorski, 2016/11/02 15:51:06]

Please ping the owners of this class, as they may no longer need to fetch
offline pages, as they are getting direct access to a newly added item.

[dewittj, 2016/11/02 16:34:37]

That's the plan

+                                        SavePageResult result,
+                                        const OfflinePageItem* item) {
   DCHECK_EQ(offline_page_model_, model);
   FetchOfflinePagesAndNotify();
 }