tree ca564c2bf92bc2e8835cf25f38732a501ea7e82b
parent 6d2c4d88c7d326cd5e711b2d9710e9c4ebc19cf0
author eseckler <eseckler@chromium.org> 1484310087 -0800
committer Commit bot <commit-bot@chromium.org> 1484310087 +0000

[headless] Add default browser context to HeadlessBrowser.

This also modifies HeadlessDevToolsManagerDelegate to send error
responses if required parameters are missing.

BUG=679343,546953

Review-Url: https://codereview.chromium.org/2626823003
Cr-Commit-Position: refs/heads/master@{#443538}