Extract GetNodeByID() method from BookmarkModel.

chrome/browser/bookmarks/bookmark_model.h

Index: chrome/browser/bookmarks/bookmark_model.h
diff --git a/chrome/browser/bookmarks/bookmark_model.h b/chrome/browser/bookmarks/bookmark_model.h
index 70ca10aa8bc690757f9006207985ccea9435bc64..a6261217c7e0671a1b92b544b2091e4e5c983c20 100644
--- a/chrome/browser/bookmarks/bookmark_model.h
+++ b/chrome/browser/bookmarks/bookmark_model.h
@@ -173,9 +173,6 @@ class BookmarkModel : public content::NotificationObserver,
   // See BookmarkService for more details on this.
   virtual void BlockTillLoaded() OVERRIDE;
 
-  // Returns the node with |id|, or NULL if there is no node with |id|.
-  const BookmarkNode* GetNodeByID(int64 id) const;
-
   // Adds a new folder node at the specified position.
   const BookmarkNode* AddFolder(const BookmarkNode* parent,
                                 int index,
@@ -306,9 +303,6 @@ class BookmarkModel : public content::NotificationObserver,
                         int index,
                         BookmarkNode* node);
 
-  // Implementation of GetNodeByID.
-  const BookmarkNode* GetNodeByID(const BookmarkNode* node, int64 id) const;
-
   // Returns true if the parent and index are valid.
   bool IsValidIndex(const BookmarkNode* parent, int index, bool allow_end);