Add aecdump support to audioproc_f.

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 8dae7d6e98cb2fe17145bb435620c0de65ce453d..67a33a9f549f665fd8bf89fb6550b368c81b44bc 100644
--- a/webrtc/common_audio/wav_file.cc
+++ b/webrtc/common_audio/wav_file.cc
@@ -39,7 +39,7 @@ class ReadableWavFile : public ReadableWav {
 
 WavReader::WavReader(const std::string& filename)
     : file_handle_(fopen(filename.c_str(), "rb")) {
-  RTC_CHECK(file_handle_ && "Could not open wav file for reading.");
+  RTC_CHECK(file_handle_) << "Could not open wav file for reading.";
 
   ReadableWavFile readable(file_handle_);
   WavFormat format;
@@ -96,7 +96,7 @@ WavWriter::WavWriter(const std::string& filename, int sample_rate,
       num_channels_(num_channels),
       num_samples_(0),
       file_handle_(fopen(filename.c_str(), "wb")) {
-  RTC_CHECK(file_handle_ && "Could not open wav file for writing.");
+  RTC_CHECK(file_handle_) << "Could not open wav file for writing.";
   RTC_CHECK(CheckWavParameters(num_channels_, sample_rate_, kWavFormat,
                                kBytesPerSample, num_samples_));