Adding a some checks and switching out a few assert for RTC_[D]CHECK.

webrtc/voice_engine/test/auto_test/standard/external_media_test.cc

Index: webrtc/voice_engine/test/auto_test/standard/external_media_test.cc
diff --git a/webrtc/voice_engine/test/auto_test/standard/external_media_test.cc b/webrtc/voice_engine/test/auto_test/standard/external_media_test.cc
index 4f86010a18aa099d3970b3048d06c99bd5af11d4..4534e128b3a76da6302bc68e8f34383a0463984d 100644
--- a/webrtc/voice_engine/test/auto_test/standard/external_media_test.cc
+++ b/webrtc/voice_engine/test/auto_test/standard/external_media_test.cc
@@ -107,20 +107,3 @@ TEST_F(ExternalMediaTest,
   EXPECT_EQ(0, voe_xmedia_->SetExternalMixing(channel_, false));
   ResumePlaying();
 }
-
-TEST_F(ExternalMediaTest,
-       ExternalMixingResamplingToInvalidFrequenciesFails) {
-  const int kInvalidFrequencies[] = {-8000, -1};
-  webrtc::AudioFrame frame;
-  PausePlaying();
-  EXPECT_EQ(0, voe_xmedia_->SetExternalMixing(channel_, true));
-  ResumePlaying();
-  for (size_t i = 0; i < arraysize(kInvalidFrequencies); i++) {
-    int f = kInvalidFrequencies[i];
-    EXPECT_EQ(-1, voe_xmedia_->GetAudioFrame(channel_, f, &frame))
-        << "Resampling fails for freq=" << f;
-  }
-  PausePlaying();
-  EXPECT_EQ(0, voe_xmedia_->SetExternalMixing(channel_, false));
-  ResumePlaying();
-}