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

third_party/WebKit/Source/modules/mediacapabilities/BUILD.gn

Index: third_party/WebKit/Source/modules/mediacapabilities/BUILD.gn
diff --git a/third_party/WebKit/Source/modules/mediacapabilities/BUILD.gn b/third_party/WebKit/Source/modules/mediacapabilities/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..1751211ea7b78cf0634da1085997a91153b646cf
--- /dev/null
+++ b/third_party/WebKit/Source/modules/mediacapabilities/BUILD.gn
@@ -0,0 +1,16 @@
+# 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.
+
+import("//third_party/WebKit/Source/modules/modules.gni")
+
+blink_modules_sources("mediacapabilities") {
+  sources = [
+    "MediaCapabilities.cpp",
+    "MediaCapabilities.h",
+    "MediaDecodingAbility.cpp",
+    "MediaDecodingAbility.h",
+    "NavigatorMediaCapabilities.cpp",
+    "NavigatorMediaCapabilities.h",
+  ]
+}