Move media/audio files into media namespace

media/audio/win/audio_low_latency_input_win_unittest.cc

Index: media/audio/win/audio_low_latency_input_win_unittest.cc
diff --git a/media/audio/win/audio_low_latency_input_win_unittest.cc b/media/audio/win/audio_low_latency_input_win_unittest.cc
index 11554c77850b00ddf5a5c65ca5c3bfc9dec4e719..2dda92dc26a200b6905cc97cb60bfbe6b6f2ba25 100644
--- a/media/audio/win/audio_low_latency_input_win_unittest.cc
+++ b/media/audio/win/audio_low_latency_input_win_unittest.cc
@@ -26,6 +26,8 @@ using ::testing::AtLeast;
 using ::testing::Gt;
 using ::testing::NotNull;
 
+namespace media {
+
 ACTION_P3(CheckCountAndPostQuitTask, count, limit, loop) {
   if (++*count >= limit) {
     loop->PostTask(FROM_HERE, MessageLoop::QuitClosure());
@@ -390,3 +392,5 @@ TEST(WinAudioInputTest, DISABLED_WASAPIAudioInputStreamRecordToFile) {
   LOG(INFO) << ">> Recording has stopped.";
   ais->Close();
 }
+
+}  // namespace media