[Cast] VideoFrameFactory interface to vend frames with encoder affinity.

media/cast/sender/video_sender_unittest.cc

Index: media/cast/sender/video_sender_unittest.cc
diff --git a/media/cast/sender/video_sender_unittest.cc b/media/cast/sender/video_sender_unittest.cc
index 120d8c7678b624c30f2317f327607fc66617b083..7a13e16d7496534df7e6bf72c19ef8e2be95e8be 100644
--- a/media/cast/sender/video_sender_unittest.cc
+++ b/media/cast/sender/video_sender_unittest.cc
@@ -128,6 +128,20 @@ class PeerVideoSender : public VideoSender {
                     base::Bind(&IgnorePlayoutDelayChanges)) {}
   using VideoSender::OnReceivedCastFeedback;
 };
+
+void CreateFrameAndMemsetPlane(VideoFrameFactory* const video_frame_factory) {
+  auto video_frame = video_frame_factory->CreateFrame(base::TimeDelta());
+  ASSERT_TRUE(video_frame.get());
+  EXPECT_EQ(VideoFrame::I420, video_frame->format());
+  auto size = video_frame->coded_size();
+  EXPECT_EQ(kWidth, size.width());
+  EXPECT_EQ(kHeight, size.height());
+  memset(video_frame->data(VideoFrame::kYPlane),
+         0xfe,
+         video_frame->rows(VideoFrame::kYPlane) *
+             video_frame->stride(VideoFrame::kYPlane));
+}
+
 }  // namespace
 
 class VideoSenderTest : public ::testing::Test {
@@ -536,5 +550,15 @@ TEST_F(VideoSenderTest, AcksCancelRetransmits) {
   EXPECT_EQ(0, transport_.number_of_rtp_packets());
 }
 
+TEST_F(VideoSenderTest, CheckVideoFrameFactory) {
+  EXPECT_EQ(STATUS_VIDEO_INITIALIZED, InitEncoder(false, true));
+  auto video_frame_factory = video_sender_->video_frame_factory();
+  ASSERT_TRUE(video_frame_factory.get());
+  CreateFrameAndMemsetPlane(video_frame_factory.get());
+  video_sender_.reset(NULL);
+  task_runner_->RunTasks();
+  CreateFrameAndMemsetPlane(video_frame_factory.get());
+}
+
 }  // namespace cast
 }  // namespace media