ozone: Allow ozone evdev/kvm features to be enabled without running on ChromeOS.

ash/shell.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/shell.h"
 
 #include <algorithm>
 #include <string>
 #include <utility>
 
@@ skipping 598 matching lines @@
 #endif
 
   // The DBusThreadManager must outlive this Shell. See the DCHECK in ~Shell.
   chromeos::DBusThreadManager* dbus_thread_manager =
       chromeos::DBusThreadManager::Get();
   projecting_observer_.reset(
       new ProjectingObserver(dbus_thread_manager->GetPowerManagerClient()));
   display_configurator_->AddObserver(projecting_observer_.get());
   wm_shell_->AddShellObserver(projecting_observer_.get());
 
-  if (!display_initialized && base::SysInfo::IsRunningOnChromeOS()) {
+  if (!display_initialized && base::SysInfo::IsRunningAsSystemCompositor()) {

[rjkroege, 2017/01/02 01:26:27]

does this risk breaking support for ChromeOS Chrome on X11? 

I realize that we will get rid of that configuration eventually and be
ozone-everywhere but I didn't think that we were yet?

[reveman, 2017/01/02 07:11:32]

ChromeOS Chrome on X11 should still work just fine. Chrome is not running as a
system compositor in that case so you'd avoid passing the flag that makes this
return true in that case. 

     display_change_observer_ = base::MakeUnique<display::DisplayChangeObserver>(
         display_configurator_.get(), display_manager_.get());
 
     shutdown_observer_ =
         base::MakeUnique<ShutdownObserver>(display_configurator_.get());
 
     // Register |display_change_observer_| first so that the rest of
     // observer gets invoked after the root windows are configured.
     display_configurator_->AddObserver(display_change_observer_.get());
     display_error_observer_.reset(new DisplayErrorObserver());
@@ skipping 278 matching lines @@
 std::unique_ptr<ui::EventTargetIterator> Shell::GetChildIterator() const {
   return std::unique_ptr<ui::EventTargetIterator>();
 }
 
 ui::EventTargeter* Shell::GetEventTargeter() {
   NOTREACHED();
   return nullptr;
 }
 
 }  // namespace ash