Fix two bugs for dmprof visualizer.

1. Put category-remaining node into this category node rather than parallel with it.
2. Fix a bug in menu-view.js.

BUG=259206,305097
NOTRY=True

Review URL: https://codereview.chromium.org/26478002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@227678 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 227678