Fixed flakiness in GetMostRecentlyAddedUserNodeForURLSkipsManagedNodes.

base::Time::Now() doesn't guarantee that successive calls don't get the
same value, and this seems to be happening on some Windows systems when
two BookmarkNodes are created one after the other in a unit test.

R=mad@chromium.org
TBR=sky@chromium.org
BUG=None

Review URL: https://codereview.chromium.org/348893002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278805 0039d316-1c4b-4281-b951-d872f2087c98

components/bookmarks/browser/bookmark_model_unittest.cc

@@ -1173,7 +1173,7 @@ TEST_F(BookmarkModelTest, GetMostRecentlyAddedUserNodeForURLSkipsManagedNodes) {
 
   // Having a more recent managed node doesn't count either.
   const BookmarkNode* managed = model_->AddURL(managed_parent, 0, title, url);
-  EXPECT_GT(managed->date_added(), user->date_added());
+  EXPECT_GE(managed->date_added(), user->date_added());
   EXPECT_EQ(user, model_->GetMostRecentlyAddedUserNodeForURL(url));
 }