GitLab

Renamed TrayDetailsView::InfoLabel to TrayInfoLabel and moved it to its own file. It also now subclasses ActionableView instead of View, so it can be clickable. TrayInfoLabel::Delegate keeps track of whether or not the label is clickable, and handles clicks.

BUG=672263,735642

Review-Url: https://codereview.chromium.org/2957043002
Cr-Commit-Position: refs/heads/master@{#487975}