bookmarks: Add HasBookmarks() method to BookmarkModel API.

chrome/browser/bookmarks/bookmark_model_unittest.cc

Index: chrome/browser/bookmarks/bookmark_model_unittest.cc
diff --git a/chrome/browser/bookmarks/bookmark_model_unittest.cc b/chrome/browser/bookmarks/bookmark_model_unittest.cc
index f5880683331102988e5928e9ef99b1f055c80665..902e4afdc7030e84d45fc057139552d60004adac 100644
--- a/chrome/browser/bookmarks/bookmark_model_unittest.cc
+++ b/chrome/browser/bookmarks/bookmark_model_unittest.cc
@@ -478,6 +478,13 @@ TEST_F(BookmarkModelTest, GetBookmarksWithDups) {
   ASSERT_TRUE(urls[0] == url);
 }
 
+TEST_F(BookmarkModelTest, HasBookmarks) {
+  const GURL url("http://foo.com/");
+  model.AddURL(model.GetBookmarkBarNode(), 0, ASCIIToUTF16("bar"), url);
+
+  EXPECT_TRUE(model.HasBookmarks());
+}
+
 namespace {
 
 // NotificationObserver implementation used in verifying we've received the