Added pref for snapshot document collapsed state

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index 924d73179dcca243f8c20211721176a8a2f576b5..3a1b6ed6b363934890ae7b46aeb49159f6dc446d 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1711,6 +1711,17 @@ const char kExtensionStorageGarbageCollect[] =
 // Keeps track of which sessions are collapsed in the Other Devices menu.
 const char kNtpCollapsedForeignSessions[] = "ntp.collapsed_foreign_sessions";
 
+// Keeps track of snapshot documents collapsed state in the Other Devices menu.

[Pam (message me for reviews), 2013/11/02 08:27:25]

nit: alphabetize to match newly alphabetized :) kNtp section of the .h file

[apiccion, 2013/11/03 17:52:59]

Done.

+const char kNtpCollapsedSnapshotDocument[] = "ntp.collapsed_snapshot_document";
+
+// Keeps track of recently closed tabs collapsed state in the Other Devices
+// menu.
+const char kNtpCollapsedRecentlyClosedTabs[] =
+    "ntp.collapsed_recently_closed_tabs";
+
+// Keeps track of sync promo collapsed state in the Other Devices menu.
+const char kNtpCollapsedSyncPromo[] = "ntp.collapsed_sync_promo";
+
 // New Tab Page URLs that should not be shown as most visited thumbnails.
 const char kNtpMostVisitedURLsBlacklist[] = "ntp.most_visited_blacklist";