Added option to specify a maximum file size when recording an AEC dump.

webrtc/modules/audio_processing/audio_processing_impl.h

Index: webrtc/modules/audio_processing/audio_processing_impl.h
diff --git a/webrtc/modules/audio_processing/audio_processing_impl.h b/webrtc/modules/audio_processing/audio_processing_impl.h
index bf29bf36332003bb62bbae0cededa3a500fe1db0..0e3d1ad6a80439c0cc0f7a07933d702d1c9fe0d4 100644
--- a/webrtc/modules/audio_processing/audio_processing_impl.h
+++ b/webrtc/modules/audio_processing/audio_processing_impl.h
@@ -102,8 +102,9 @@ class AudioProcessingImpl : public AudioProcessing {
   void set_delay_offset_ms(int offset) override;
   int delay_offset_ms() const override;
   void set_stream_key_pressed(bool key_pressed) override;
-  int StartDebugRecording(const char filename[kMaxFilenameSize]) override;
-  int StartDebugRecording(FILE* handle) override;
+  int StartDebugRecording(const char filename[kMaxFilenameSize],
+                          int64_t max_log_size_bytes) override;
+  int StartDebugRecording(FILE* handle, int64_t max_log_size_bytes) override;
   int StartDebugRecordingForPlatformFile(rtc::PlatformFile handle) override;
   int StopDebugRecording() override;
   void UpdateHistogramsOnCallEnd() override;
@@ -174,6 +175,10 @@ class AudioProcessingImpl : public AudioProcessing {
 
   // Serialized string of last saved APM configuration.
   std::string last_serialized_config_;
+
+  // Number of bytes that can still be written to the log before the maximum
+  // size is reached. A value of <= 0 indicates that no limit is used.
+  int64_t nr_bytes_left_for_log_;

[the sun, 2015/11/24 10:10:10]

nit: nr_ -> num_

[Andrew MacDonald, 2015/11/24 17:28:59]

+1

[ivoc, 2015/12/01 15:17:16]

Done.

 #endif
 
   // Format of processing streams at input/output call sites.