PPAPI: Make output protection API work with mus+ash

services/ui/display/output_protection.cc

Index: services/ui/display/output_protection.cc
diff --git a/services/ui/display/output_protection.cc b/services/ui/display/output_protection.cc
new file mode 100644
index 0000000000000000000000000000000000000000..2e7b53908c37bd362f07f0bb1b715ae7bf621078
--- /dev/null
+++ b/services/ui/display/output_protection.cc
@@ -0,0 +1,34 @@
+// Copyright 2017 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 "services/ui/display/output_protection.h"
+
+#include "ui/display/manager/chromeos/display_configurator.h"
+
+namespace display {
+
+OutputProtection::OutputProtection(DisplayConfigurator* display_configurator)
+    : display_configurator_(display_configurator),
+      client_id_(display_configurator_->RegisterContentProtectionClient()) {}
+
+OutputProtection::~OutputProtection() {
+  display_configurator_->UnregisterContentProtectionClient(client_id_);

[sky, 2017/02/10 19:24:56]

Does unregister automatically revert?

[Peng, 2017/02/10 20:35:47]

I checked the code of DisplayConfigurator. Seems the requested mask
is associated to given client id. I assume, when the client is 
unregistered, the associated mask will be reverted.

@kcwu, could you please confirm it?

[kcwu, 2017/02/11 01:45:21]

Yes, your understanding is correct.

+}
+
+void OutputProtection::QueryContentProtectionStatus(
+    int64_t display_id,
+    const QueryContentProtectionStatusCallback& callback) {
+  display_configurator_->QueryContentProtectionStatus(client_id_, display_id,
+                                                      callback);
+}
+
+void OutputProtection::EnableContentProtection(
+    int64_t display_id,
+    uint32_t desired_method_mask,
+    const EnableContentProtectionCallback& callback) {
+  display_configurator_->EnableContentProtection(client_id_, display_id,
+                                                 desired_method_mask, callback);
+}
+
+}  // namespace display