bookmarks: Remove unnecessary namespace qualifiers.

components/bookmarks/browser/bookmark_utils.cc

Index: components/bookmarks/browser/bookmark_utils.cc
diff --git a/components/bookmarks/browser/bookmark_utils.cc b/components/bookmarks/browser/bookmark_utils.cc
index 7199ad5c6332400c87d051e716d2eda1fd7516ac..758f19f6e3e226bf18cd71bbe12a4011a000f11f 100644
--- a/components/bookmarks/browser/bookmark_utils.cc
+++ b/components/bookmarks/browser/bookmark_utils.cc
@@ -510,13 +510,12 @@ const BookmarkNode* GetBookmarkNodeByID(const BookmarkModel* model, int64 id) {
   return GetNodeByID(model->root_node(), id);
 }
 
-bool IsDescendantOf(const bookmarks::BookmarkNode* node,
-                    const bookmarks::BookmarkNode* root) {
+bool IsDescendantOf(const BookmarkNode* node, const BookmarkNode* root) {
   return node && node->HasAncestor(root);
 }
 
-bool HasDescendantsOf(const std::vector<const bookmarks::BookmarkNode*>& list,
-                      const bookmarks::BookmarkNode* root) {
+bool HasDescendantsOf(const std::vector<const BookmarkNode*>& list,
+                      const BookmarkNode* root) {
   for (const BookmarkNode* node : list) {
     if (IsDescendantOf(node, root))
       return true;