DevTools: [SSP] add missing jsdoc annotations

The patch adds missing jsdoc annotations to StylesSidebarPane.

R=vsevik

Review URL: https://codereview.chromium.org/743183002

git-svn-id: svn://svn.chromium.org/blink/trunk@185798 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Support harmony variable scopes.

This adds support of "Block" and "Script" variable scopes to DevTools.

BUG=433324
R=yurys, dslomov

Review URL: https://codereview.chromium.org/738733006

git-svn-id: svn://svn.chromium.org/blink/trunk@185801 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: Promisify JS profile on timeline start/stop

Review URL: https://codereview.chromium.org/739133002

git-svn-id: svn://svn.chromium.org/blink/trunk@185804 bbb929c8-8fbe-4397-9dbb-9b2b20218538