Move functionality out from AudioFrame and into AudioFrameOperations.

webrtc/voice_engine/transmit_mixer.cc

Index: webrtc/voice_engine/transmit_mixer.cc
diff --git a/webrtc/voice_engine/transmit_mixer.cc b/webrtc/voice_engine/transmit_mixer.cc
index 834510d8f697d9f992c198e0501c805027cda03f..de84db9665d4e6a71ba01d4b4bfd7f693dc24127 100644
--- a/webrtc/voice_engine/transmit_mixer.cc
+++ b/webrtc/voice_engine/transmit_mixer.cc
@@ -1121,14 +1121,10 @@ int32_t TransmitMixer::MixOrReplaceAudioWithFile(
         // Replace ACM audio with file.
         // Currently file stream is always mono.
         // TODO(xians): Change the code when FilePlayer supports real stereo.
-        _audioFrame.UpdateFrame(-1,
-                                0xFFFFFFFF,
-                                fileBuffer.get(),
-                                fileSamples,
-                                mixingFrequency,
-                                AudioFrame::kNormalSpeech,
-                                AudioFrame::kVadUnknown,
-                                1);
+        AudioFrameOperations::UpdateFrame(
+            -1, 0xFFFFFFFF, fileBuffer.get(), fileSamples, mixingFrequency,
+            AudioFrame::kNormalSpeech, AudioFrame::kVadUnknown, 1,
+            &_audioFrame);
     }
     return 0;
 }