[DevTools] New harness for inspector-protocol layout tests
New harness loads a helper html file in a main testing window,
connects it to a browser-wide DevToolsAgentHost for manipulating pages
and evaluates the javascript test.
DevToolsProtocolTestBindings is a small implementation of
DevToolsAgentHost <--> harness communication (based on DevToolsFrontendHost).
Harness has a Page and Session class, which will make it possible to test
multiple sessions connected to the same page, and (if need arises) multiple
pages interaction.
Converted 4 tests to new harness. More to come.
BUG=734762
Review-Url: https://codereview.chromium.org/2950713002
Cr-Commit-Position: refs/heads/master@{#481419}
23 files changed
