Changes in the wav_file implementation in order to avoid clang warnings

webrtc/common_audio/wav_file.cc

Index: webrtc/common_audio/wav_file.cc
diff --git a/webrtc/common_audio/wav_file.cc b/webrtc/common_audio/wav_file.cc
index 94b7a3c2c051c64c5ad5ddf34bc08f253979ea18..572c94ba3d25480ca9f186f013705d1942b68bac 100644
--- a/webrtc/common_audio/wav_file.cc
+++ b/webrtc/common_audio/wav_file.cc
@@ -64,6 +64,18 @@ WavReader::~WavReader() {
   Close();
 }
 
+int WavReader::sample_rate() const {
+  return sample_rate_;
+}
+
+size_t WavReader::num_channels() const {
+  return num_channels_;
+}
+
+size_t WavReader::num_samples() const {
+  return num_samples_;
+}
+
 size_t WavReader::ReadSamples(size_t num_samples, int16_t* samples) {
 #ifndef WEBRTC_ARCH_LITTLE_ENDIAN
 #error "Need to convert samples to big-endian when reading from WAV file"
@@ -118,6 +130,18 @@ WavWriter::~WavWriter() {
   Close();
 }
 
+int WavWriter::sample_rate() const {
+  return sample_rate_;
+}
+
+size_t WavWriter::num_channels() const {
+  return num_channels_;
+}
+
+size_t WavWriter::num_samples() const {
+  return num_samples_;
+}
+
 void WavWriter::WriteSamples(const int16_t* samples, size_t num_samples) {
 #ifndef WEBRTC_ARCH_LITTLE_ENDIAN
 #error "Need to convert samples to little-endian when writing to WAV file"