[chromecast] Statically link libcast_media_default for media unittests.

chromecast/media/BUILD.gn

 # 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("//chromecast/chromecast.gni")
 import("//testing/test.gni")
 
 group("media") {
   public_deps = [
     "//chromecast/media/audio",
@@ skipping 39 matching lines @@
     "//chromecast/media/cma/ipc",
     "//chromecast/media/cma/ipc_streamer",
     "//chromecast/media/cma/pipeline",
     "//chromecast/public",
     "//media",
     "//media/base:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//ui/gfx/geometry",
   ]
+
+  if (chromecast_branding == "public") {
+    # Link default libcast_media_1.0 statically not to link dummy one
+    # dynamically for public unittests.
+    deps += [ "//chromecast/media/base:libcast_media_1.0_default_core" ]
+  }
 }