Flip proprietary codecs to false for Android chromium builds.

media/base/android/BUILD.gn

Index: media/base/android/BUILD.gn
diff --git a/media/base/android/BUILD.gn b/media/base/android/BUILD.gn
index 7ac7d9727364fb3b8c2538c90d543e3ff7bd5471..b9db10a83a815e0277a44dd90ea9e32afc829e42 100644
--- a/media/base/android/BUILD.gn
+++ b/media/base/android/BUILD.gn
@@ -83,7 +83,6 @@ source_set("unittests") {
   sources = [
     "access_unit_queue_unittest.cc",
     "media_codec_decoder_unittest.cc",
-    "media_codec_player_unittest.cc",
     "media_drm_bridge_unittest.cc",
     "media_player_bridge_unittest.cc",
     "media_source_player_unittest.cc",
@@ -92,6 +91,11 @@ source_set("unittests") {
     "test_data_factory.h",
     "test_statistics.h",
   ]
+
+  if (proprietary_codecs) {
+    sources += [ "media_codec_player_unittest.cc" ]
+  }
+
   deps = [
     ":android",
     "//media/base:test_support",