The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7c906465e5b78c10fa1d8aab63a80b94096f1a0b

commit 7c906465e5b78c10fa1d8aab63a80b94096f1a0b
Author: Scott Violet <sky@chromium.org>
Date: Wed Sep 19 16:18:50 2018

aura/window-service: couple of random changes

EmbedRoot: needs to show the WindowTreeHost. I'm a surprised we actually see
  anything without this.
WindowPortMus: removes an unnecessary local.
WindowTree: Renames GetClientRootWindowFor() to FindClientRootContaining().

BUG=881574
TEST=covered by tests

Change-Id: I869d59dd2a20c5a608ef1c7346bc906de73f84dc
Reviewed-on: https://chromium-review.googlesource.com/1233173
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592429}
[modify] https://crrev.com/7c906465e5b78c10fa1d8aab63a80b94096f1a0b/services/ws/window_tree.cc
[modify] https://crrev.com/7c906465e5b78c10fa1d8aab63a80b94096f1a0b/services/ws/window_tree.h
[modify] https://crrev.com/7c906465e5b78c10fa1d8aab63a80b94096f1a0b/ui/aura/mus/embed_root.cc
[modify] https://crrev.com/7c906465e5b78c10fa1d8aab63a80b94096f1a0b/ui/aura/mus/window_port_mus.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/47a3f38c37bc545b01c1f8eb90322ff057320fac

commit 47a3f38c37bc545b01c1f8eb90322ff057320fac
Author: James Cook <jamescook@chromium.org>
Date: Thu Sep 20 19:21:11 2018

Re-enable MediaEngagementAutoplayBrowserTest.UsePreloadedData_Allowed

It was disabled on all Linux platforms due to failures on Chrome OS
in SingleProcessMash browser_tests.

Instead, disable all MediaEngagement browser_tests via filter file
for SingleProcessMash. There's a fix in-flight for renderer
embedding in this mode, so I expect to re-enable them shortly.

Bug:  884589 ,  883706 , 881574
Change-Id: If6257ea160c7ba83c9bb322941001ce5ab1cc1b7
Reviewed-on: https://chromium-review.googlesource.com/1236836
Reviewed-by: Becca Hughes <beccahughes@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#592897}
[modify] https://crrev.com/47a3f38c37bc545b01c1f8eb90322ff057320fac/chrome/browser/media/media_engagement_autoplay_browsertest.cc
[modify] https://crrev.com/47a3f38c37bc545b01c1f8eb90322ff057320fac/testing/buildbot/filters/chromeos.single_process_mash.browser_tests.filter

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/e46b335bf85509c6a33dadab359b94f0bc043756

commit e46b335bf85509c6a33dadab359b94f0bc043756
Author: Scott Violet <sky@chromium.org>
Date: Sat Sep 22 00:37:07 2018

chromeos: makes renderers not use window-service for single-process-mash

In order to support this the window-service gets Attach/UnattachFrameSinkId.

BUG=881574
TEST=covered by tests

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel
Change-Id: I1bbf82170adf0e254eda8ffa7f1804d56495cb2a
Reviewed-on: https://chromium-review.googlesource.com/1233174
Commit-Queue: Scott Violet <sky@chromium.org>
Reviewed-by: Sadrul Chowdhury <sadrul@chromium.org>
Reviewed-by: Daniel Cheng <dcheng@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593393}
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/components/viz/host/host_frame_sink_manager.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/components/viz/host/host_frame_sink_manager.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/browser_main_loop.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/browser_plugin/browser_plugin_guest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/compositor/gpu_process_transport_factory.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/frame_host/cross_process_frame_connector.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/frame_host/render_widget_host_view_guest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/oop_browsertest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/renderer_host/render_process_host_impl.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/renderer_host/render_widget_host_view_aura.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/renderer_host/render_widget_host_view_aura_unittest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/renderer_host/render_widget_host_view_child_frame.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/renderer_host/render_widget_host_view_child_frame_browsertest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/service_manager/common_browser_interfaces.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/web_contents/web_contents_view_aura.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/browser/web_contents/web_contents_view_guest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/common/content_param_traits.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/ppapi_plugin/ppapi_thread.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/renderer/browser_plugin/browser_plugin.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/renderer/mus/renderer_window_tree_client.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/renderer/render_frame_proxy.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/renderer/render_thread_impl.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/content/renderer/render_widget.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/BUILD.gn
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/DEPS
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/client_root.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/client_root.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/public/mojom/window_tree.mojom
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/server_window.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/server_window.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/window_tree.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/window_tree.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/services/ws/window_tree_unittest.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/mus/window_port_mus.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/mus/window_port_mus.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/mus/window_tree_client.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/mus/window_tree_client.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/test/mus/test_window_tree.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/test/mus/test_window_tree.h
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/window.cc
[modify] https://crrev.com/e46b335bf85509c6a33dadab359b94f0bc043756/ui/aura/window_port.h

This is now done for single-process-mash, but not multi-process-mash requires more work. Fady has a design doc out for the work. I'm retargetting to multi-process-mash.

I'm moving this to available until the design doc is worked out.