commit ff082c9239dab7f23f08dc40bb02909ec5f2e754
author Luciano Pacheco <lucmult@chromium.org> Thu Sep 20 07:16:58 2018
committer Commit Bot <commit-bot@chromium.org> Thu Sep 20 07:16:58 2018
tree 819a27f07b6e60252d39c4d40dede01601d2cfd2
parent c1aad3ca98706b7288c0125fa80672d5d98e212a

Fix Audio Player Polymer 1 configuration

Audio Player was using Shadow DOM's polyfil, aka Shady DOM which is
included in Polymer1. Chrome has had a fully working native Shadow DOM
for quite a while. The remaining Polymer WebUI has already been using
native Shadow DOM.

This fix is to make Audio Player elements and tests compatible with
Polymer2, tests still require further work to pass in Polymer2.

Replace all occurrences of:
"chrome://resources/polymer/v1_0/polymer/polymer.html"
with:
"chrome://resources/html/polymer.html"

The new polymer.html configures Polymer 1.0 to run with ShadowRoot
making these polymer elements be compatible with Polymer 2.0.

Fix Audio Player tests:

1. Audio Player is compound of 3 main Polymer elements:
* "audio-player": main component which use the other 2 below.
* "control-panel": buttons to control, like play, pause, next, etc.
* "track-list": List of all tracks to be played.

2. Files app and Audio player test utils, has the ability to query
elements deep in the ShadowRoot, however it requires an Array of
selectors instead of a simple string selector. For every element that
has a ShadowRoot, we need to provide an element on the selector array.
E.g.:
['audio-player', 'control-panel', '.some-class']: Gets "audio-player"
then selects in its shadowRoot for "control-panel", then selects
".some-class" in "control-panel" shadowRoot.

3. Define "trackListQuery" and "controlPanelQuery" to make simpler to
traverse these 2 Polymer sub-components.

4. Fix all selectors to make explicit the component traversal.

Test: browser_tests --gtest_filter="AudioPlayer*:OpenAudioFiles*"
Bug: 875525
Change-Id: I64e94452ff4cc8eb51137620013ad0cf00101f67
Reviewed-on: https://chromium-review.googlesource.com/1226478
Reviewed-by: Noel Gordon <noel@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Demetrios Papadopoulos <dpapad@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592709}