Extend components/test_runner's generated WebMediaStream to have a ChromeMock VideoTrack and Source

components/test_runner/renderer/BUILD.gn

Index: components/test_runner/renderer/BUILD.gn
diff --git a/components/test_runner/renderer/BUILD.gn b/components/test_runner/renderer/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..e613b0098add6dfe54af04605768346c6809db21
--- /dev/null
+++ b/components/test_runner/renderer/BUILD.gn
@@ -0,0 +1,20 @@
+# Copyright 2015 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("//build/config/features.gni")
+
+component("renderer") {
+  testonly = true
+
+  sources = [
+    "mock_video_capturer_source.cc",
+    "mock_video_capturer_source.h",
+  ]
+
+  if (enable_webrtc) {
+    deps = [
+      "//content/public/renderer",

[sadrul, 2015/10/06 15:23:28]

test_runner should not depend on content.

+    ]
+  }
+}