Make video codec support logic overridable via MediaClient

media/base/key_systems_unittest.cc

Index: media/base/key_systems_unittest.cc
diff --git a/media/base/key_systems_unittest.cc b/media/base/key_systems_unittest.cc
index 6bf2c6e8f68a9365f3cccd313d6ad027d7cdf739..b8dac94b9c58a90e8450c9f37a6321929a9558ee 100644
--- a/media/base/key_systems_unittest.cc
+++ b/media/base/key_systems_unittest.cc
@@ -179,6 +179,9 @@ class TestMediaClient : public MediaClient {
   void AddSupportedKeySystems(std::vector<std::unique_ptr<KeySystemProperties>>*
                                   key_systems_properties) override;
   void RecordRapporURL(const std::string& metric, const GURL& url) final;
+  bool IsSupportedVideoConfig(media::VideoCodec codec,
+                              media::VideoCodecProfile profile,
+                              int level) final;
 
   // Helper function to test the case where IsKeySystemsUpdateNeeded() is true
   // after AddSupportedKeySystems() is called.
@@ -229,6 +232,12 @@ void TestMediaClient::RecordRapporURL(const std::string& /* metric */,
   NOTIMPLEMENTED();
 }
 
+bool TestMediaClient::IsSupportedVideoConfig(media::VideoCodec codec,
+                                             media::VideoCodecProfile profile,
+                                             int level) {
+  return true;
+}
+
 void TestMediaClient::SetKeySystemsUpdateNeeded() {
   is_update_needed_ = true;
 }