Made the bookmarks extension APIs aware of managed bookmarks.

chrome/browser/extensions/api/bookmarks/bookmarks_api.h

Index: chrome/browser/extensions/api/bookmarks/bookmarks_api.h
diff --git a/chrome/browser/extensions/api/bookmarks/bookmarks_api.h b/chrome/browser/extensions/api/bookmarks/bookmarks_api.h
index fc73e0c76f045cd6b62fdc4d324ea31f3095fd89..28abe86f094099ddfbcbd5d87d2627f8d1a2a4d9 100644
--- a/chrome/browser/extensions/api/bookmarks/bookmarks_api.h
+++ b/chrome/browser/extensions/api/bookmarks/bookmarks_api.h
@@ -146,6 +146,12 @@ class BookmarksFunction : public ChromeAsyncExtensionFunction,
   // error_ to the appropriate error string.
   bool EditBookmarksEnabled();
 
+  // Helper that checks if |node| can be modified. Returns false if |node|
+  // is NULL, or a managed node, or the root node. In these cases the node
+  // can't be edited, can't have new child nodes appended, and its direct
+  // children can't be moved or reordered.

[not at google - send to devlin, 2014/06/03 18:09:16]

I'm a little confused by this comment. Why does, for example, |node| being a
root node prevent it from having a new child appended?

[Joao da Silva, 2014/06/05 17:10:32]

Note that there is _the_ root node, and there are the permanent "root" nodes,
which are the direct children of the root node. You can add nodes to the
permanent nodes (bookmark_bar, other_node, etc) but not to the root_node.

+  bool CanBeModified(const BookmarkNode* node);
+
  private:
   // BaseBookmarkModelObserver:
   virtual void BookmarkModelChanged() OVERRIDE;