[DevTools] Rename entities in js_protocol, remove deprecated ones.

BUG=635947

Review-Url: https://codereview.chromium.org/2249743002
Cr-Original-Commit-Position: refs/heads/master@{#412364}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 2846fc559943461bfbfd2048b9b6e2665d0ea821
8 files changed