GTK: allow bookmark manager to MOVE as well as COPY.

BUG=41601
TEST=manual

Review URL: http://codereview.chromium.org/1610035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@44955 0039d316-1c4b-4281-b951-d872f2087c98
void BookmarkDrag::BeginDrag(Profile* profile,
                             const std::vector<const BookmarkNode*>& nodes) {
  new BookmarkDrag(profile, nodes);
}

void BookmarkDrag::BeginDrag(Profile* profile,
                             const std::vector<const BookmarkNode*>& nodes) {
  new BookmarkDrag(profile, nodes);
}
