DevTools: allow shallow array values in console.table
Today's console.table() implementation only looks at nested array values
`console.table([[1, 2, 3]])`. It ignores shallow array values, so commands such
as `console.table([1, 2, 3])` will not show anything.
To more closely align with the living standard supported in other browsers, this
CL finally brings supports to shallow values with a new 'Value' column.
Screenshot: http://imgur.com/a/c3afb
BUG=663878
Review-Url: https://codereview.chromium.org/2918993003
Cr-Commit-Position: refs/heads/master@{#476852}
3 files changed
