Add new ANA stats to GetStats() to count the number of actions taken by each controller.

webrtc/audio/audio_send_stream_unittest.cc

Index: webrtc/audio/audio_send_stream_unittest.cc
diff --git a/webrtc/audio/audio_send_stream_unittest.cc b/webrtc/audio/audio_send_stream_unittest.cc
index 1308657d0e465514d953b92245ce1091333c373a..4c29f6ac632bb5942f9af40d3e75b6fe12dca0a5 100644
--- a/webrtc/audio/audio_send_stream_unittest.cc
+++ b/webrtc/audio/audio_send_stream_unittest.cc
@@ -301,6 +301,8 @@ struct ConfigHelper {
         .WillRepeatedly(Return(kCallStats));
     EXPECT_CALL(*channel_proxy_, GetRemoteRTCPReportBlocks())
         .WillRepeatedly(Return(report_blocks));
+    EXPECT_CALL(*channel_proxy_, GetANAStatistics())
+        .WillRepeatedly(Return(ANAStats()));
     EXPECT_CALL(voice_engine_, transmit_mixer())
         .WillRepeatedly(Return(&transmit_mixer_));