GitLab

Add pre-defined native messaging destination that allows
whitelisted extensions to send messages to the
diagnostics_processor daemon (via the diagnosticsd daemon)
and receive the responses back.

The extension should use either chrome.runtime.sendNativeMessage
or chrome.runtime.connectNative with the
'com.google.wilco_dtc' application in order to use this
message pipe.

The hardcoded whitelist for accessing this message pipe is currently
empty - it will have to be updated once we figure out extension IDs
that we'll use.

BUG=chromium:907932,b:123926112
TEST=manual

Change-Id: I9083dd87346b490cb43ca8aabd2f7534245215e2
Reviewed-on: https://chromium-review.googlesource.com/c/1463442Reviewed-by: Mattias Nissler <mnissler@chromium.org>
Reviewed-by: Sergey Ulanov <sergeyu@chromium.org>
Reviewed-by: Polina Bondarenko <pbond@chromium.org>
Commit-Queue: Maksim Ivanov <emaxx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#635494}