Add a shortcut to open the Apps page from the bookmark bar.

chrome/browser/bookmarks/bookmark_utils.cc

Index: chrome/browser/bookmarks/bookmark_utils.cc
diff --git a/chrome/browser/bookmarks/bookmark_utils.cc b/chrome/browser/bookmarks/bookmark_utils.cc
index 2e647ddf262aaaf43378455dc1a17785c39911af..5f35ce64b1e4d12cf0079a6df3eb820e175d3b94 100644
--- a/chrome/browser/bookmarks/bookmark_utils.cc
+++ b/chrome/browser/bookmarks/bookmark_utils.cc
@@ -440,6 +440,9 @@ void RegisterUserPrefs(PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(prefs::kEditBookmarksEnabled,
                                 true,
                                 PrefRegistrySyncable::UNSYNCABLE_PREF);
+  registry->RegisterBooleanPref(prefs::kShowAppsShortcutInBookmarkBar,
+                                true,
+                                PrefRegistrySyncable::SYNCABLE_PREF);
 }
 
 const BookmarkNode* GetParentForNewNodes(
@@ -520,6 +523,13 @@ void RecordBookmarkLaunch(BookmarkLaunchLocation location) {
   UMA_HISTOGRAM_ENUMERATION("Bookmarks.LaunchLocation", location, LAUNCH_LIMIT);
 }
 
+void RecordAppsPageOpen(BookmarkLaunchLocation location) {
+  if (location == LAUNCH_DETACHED_BAR || location == LAUNCH_ATTACHED_BAR) {
+    content::RecordAction(
+        UserMetricsAction("ClickedBookmarkBarAppsShortcutButton"));
+  }
+}
+
 #if defined(OS_WIN) || defined(OS_CHROMEOS) || defined(USE_AURA)
 void DisableBookmarkBarViewAnimationsForTesting(bool disabled) {
   g_bookmark_bar_view_animations_disabled = disabled;