bookmarks: Move BookmarkNode into 'bookmarks' namespace.

chrome/browser/bookmarks/bookmark_stats.h

Index: chrome/browser/bookmarks/bookmark_stats.h
diff --git a/chrome/browser/bookmarks/bookmark_stats.h b/chrome/browser/bookmarks/bookmark_stats.h
index af4d6ac0c25d0d058bac87ac001cfde9e2422818..bcfea72178aa9ceaf8b91219f7275277f2654853 100644
--- a/chrome/browser/bookmarks/bookmark_stats.h
+++ b/chrome/browser/bookmarks/bookmark_stats.h
@@ -5,7 +5,9 @@
 #ifndef CHROME_BROWSER_BOOKMARKS_BOOKMARK_STATS_H_
 #define CHROME_BROWSER_BOOKMARKS_BOOKMARK_STATS_H_
 
+namespace bookmarks {
 class BookmarkNode;
+}
 
 // This enum is used for the Bookmarks.EntryPoint histogram.
 enum BookmarkEntryPoint {
@@ -40,7 +42,7 @@ enum BookmarkLaunchLocation {
 };
 
 // Records the launch of a bookmark for UMA purposes.
-void RecordBookmarkLaunch(const BookmarkNode* node,
+void RecordBookmarkLaunch(const bookmarks::BookmarkNode* node,
                           BookmarkLaunchLocation location);
 
 // Records the user opening a folder of bookmarks for UMA purposes.