Make sure AudioBufferConverter uses aligned AudioBus channels.

media/base/audio_buffer_converter_unittest.cc

Index: media/base/audio_buffer_converter_unittest.cc
diff --git a/media/base/audio_buffer_converter_unittest.cc b/media/base/audio_buffer_converter_unittest.cc
index 80567cf990f1527e271e00c473f15600be8036c7..f346652fb8aff9522a32ee14d492d48254e1c645 100644
--- a/media/base/audio_buffer_converter_unittest.cc
+++ b/media/base/audio_buffer_converter_unittest.cc
@@ -12,6 +12,8 @@
 
 namespace media {
 
+// Important: Use an odd buffer size here so SIMD issues are caught.
+const int kOutFrameSize = 441;
 const int kOutSampleRate = 44100;
 const ChannelLayout kOutChannelLayout = CHANNEL_LAYOUT_STEREO;
 
@@ -36,7 +38,7 @@ class AudioBufferConverterTest : public ::testing::Test {
                                   kOutChannelLayout,
                                   kOutSampleRate,
                                   16,
-                                  512);
+                                  kOutFrameSize);
     audio_buffer_converter_.reset(new AudioBufferConverter(output_params));
   }