Media Capabilities: stub implementation of mediaCapabilities.query().

third_party/WebKit/Source/modules/mediacapabilities/MediaConfiguration.idl

Index: third_party/WebKit/Source/modules/mediacapabilities/MediaConfiguration.idl
diff --git a/third_party/WebKit/Source/modules/mediacapabilities/MediaConfiguration.idl b/third_party/WebKit/Source/modules/mediacapabilities/MediaConfiguration.idl
new file mode 100644
index 0000000000000000000000000000000000000000..5d82f14cb120f95513d4cb6e786b12ed9222b926
--- /dev/null
+++ b/third_party/WebKit/Source/modules/mediacapabilities/MediaConfiguration.idl
@@ -0,0 +1,17 @@
+// 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.
+
+// https://wicg.github.io/media-capabilities/#dictdef-mediaconfiguration
+
+enum MediaConfigurationType {
+    "file",
+    "MediaSource",
+};
+
+dictionary MediaConfiguration {
+    required MediaConfigurationType type;
+
+    VideoConfiguration video;
+    AudioConfiguration audio;
+};