Avoid log spam in AudioSyncReader.

content/browser/renderer_host/media/audio_input_sync_writer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_
 #define CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <deque>
 #include <memory>
+#include <string>
 #include <vector>
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "base/process/process.h"
 #include "base/sync_socket.h"
 #include "base/time/time.h"
 #include "build/build_config.h"
 #include "content/common/content_export.h"
 #include "media/audio/audio_input_controller.h"
@@ skipping 112 matching lines @@
   // Counts the total number of calls to Write().
   size_t write_count_;
 
   // Counts the number of writes to the fifo instead of to the shared memory.
   size_t write_to_fifo_count_;
 
   // Counts the number of errors that causes data to be dropped, due to either
   // the fifo or the socket buffer being full.
   size_t write_error_count_;
 
+  // Denotes that the most recent socket error has been logged. Used to avoid
+  // log spam.
+  bool had_socket_error_;
+
   // Counts the fifo writes and errors we get during renderer process teardown
   // so that we can account for that (subtract) when we calculate the overall
   // counts.
   size_t trailing_write_to_fifo_count_;
   size_t trailing_write_error_count_;
 
   // Vector of audio buses allocated during construction and deleted in the
   // destructor.
   std::vector<std::unique_ptr<media::AudioBus>> audio_buses_;
 
   // Fifo for audio that is used in case there isn't room in the shared memory.
   // This can for example happen under load when the consumer side is starved.
   // It should ideally be rare, but we need to guarantee that the data arrives
   // since audio processing such as echo cancelling requires that to perform
   // properly.
   std::vector<std::unique_ptr<media::AudioBus>> overflow_buses_;
   struct OverflowParams {
     double volume;
     uint32_t hardware_delay_bytes;
     bool key_pressed;
   };
   std::deque<OverflowParams> overflow_params_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(AudioInputSyncWriter);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_MEDIA_AUDIO_INPUT_SYNC_WRITER_H_