Update window.internals.addTextMatchMarker() to take enum instead of bool

Suggested by @yosin here:
https://codereview.chromium.org/2801483002#msg20

We are changing DocumentMarkerController::addTextMatchMarker() to take an enum in https://codereview.chromium.org/2801483002 since it's unclear from looking at a callsite what "true" and "false" mean. This CL handles the window.internals changes separately since a bunch of tests have to be updated.

BUG=707867

Review-Url: https://codereview.chromium.org/2802543002
Cr-Commit-Position: refs/heads/master@{#462319}
16 files changed