Add Profile 2 configuration to VP9 Encoder and Decoder

Bug: webrtc:9376
Change-Id: I4f627fb2b6c146a90cfcaa815da459b09dc00003
Reviewed-on: https://webrtc-review.googlesource.com/81980
Commit-Queue: Emircan Uysaler <emircan@webrtc.org>
Reviewed-by: Niklas Enbom <niklas.enbom@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Reviewed-by: Jerome Jiang <jianj@google.com>
Cr-Commit-Position: refs/heads/master@{#23917}

modules/video_coding/codecs/test/video_codec_unittest.cc

@@ -69,8 +69,7 @@ void VideoCodecUnitTest::SetUp() {
 
   input_frame_generator_ = test::FrameGenerator::CreateSquareGenerator(
       codec_settings_.width, codec_settings_.height,
-      absl::optional<test::FrameGenerator::OutputType>(),
-      absl::optional<int>());
+      test::FrameGenerator::OutputType::I420, absl::optional<int>());
 
   encoder_ = CreateEncoder();
   decoder_ = CreateDecoder();