Made the bookmarks extension APIs aware of managed bookmarks.

chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc

Index: chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc
diff --git a/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc b/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc
index 182cbb4a9844617f47dad2b678a27efb88b24ba0..49fc0433463f20ddd3c2b4c9a3fc42684e5d3f01 100644
--- a/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc
+++ b/chrome/browser/extensions/api/bookmarks/bookmark_api_helpers.cc
@@ -9,6 +9,7 @@
 
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/bookmarks/chrome_bookmark_client.h"
 #include "chrome/browser/extensions/api/bookmarks/bookmark_api_constants.h"
 #include "chrome/common/extensions/api/bookmarks.h"
 #include "components/bookmarks/browser/bookmark_model.h"
@@ -97,10 +98,11 @@ void AddNodeFoldersOnly(const BookmarkNode* node,
   return AddNodeHelper(node, nodes, recurse, true);
 }
 
-bool RemoveNode(BookmarkModel* model,
+bool RemoveNode(ChromeBookmarkClient* client,
                 int64 id,
                 bool recursive,
                 std::string* error) {
+  BookmarkModel* model = client->model();
   const BookmarkNode* node = GetBookmarkNodeByID(model, id);
   if (!node) {
     *error = keys::kNoNodeError;
@@ -110,6 +112,10 @@ bool RemoveNode(BookmarkModel* model,
     *error = keys::kModifySpecialError;
     return false;
   }
+  if (client->IsDescendantOfManagedNode(node)) {
+    *error = keys::kModifyManagedError;
+    return false;
+  }
   if (node->is_folder() && !node->empty() && !recursive) {
     *error = keys::kFolderNotEmptyError;
     return false;