Fix NullPointerException upon bookmark open

Bug: 990534
Change-Id: I6a980d68c33a08306286ff4e6628f291203f55bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1733894Reviewed-by: Theresa  <twellington@chromium.org>
Reviewed-by: Matthew Jones <mdjones@chromium.org>
Commit-Queue: Jenna Himawan <jhimawan@google.com>
Cr-Commit-Position: refs/heads/master@{#684110}

chrome/android/java/src/org/chromium/chrome/browser/bookmarks/BookmarkManager.java

@@ -509,7 +509,6 @@ public class BookmarkManager
 
     @Override
     public void openBookmark(BookmarkId bookmark, int launchLocation) {
-        mSelectionDelegate.clearSelection();
         if (BookmarkUtils.openBookmark(
                     mBookmarkModel, mActivity, bookmark, launchLocation)) {
             BookmarkUtils.finishActivityOnPhone(mActivity);