Ensure that data is not overwritten in the audio input shared memory ring buffer that sits on the b…

content/browser/renderer_host/media/audio_input_sync_writer.h

Index: content/browser/renderer_host/media/audio_input_sync_writer.h
diff --git a/content/browser/renderer_host/media/audio_input_sync_writer.h b/content/browser/renderer_host/media/audio_input_sync_writer.h
index cc6c0f248e5e7568681b19ca35a4eb51bc4fdb89..eab38f49d2afd0169bb6b4f4d30db777381821ed 100644
--- a/content/browser/renderer_host/media/audio_input_sync_writer.h
+++ b/content/browser/renderer_host/media/audio_input_sync_writer.h
@@ -70,6 +70,12 @@ class AudioInputSyncWriter : public media::AudioInputController::SyncWriter {
   // Increasing ID used for audio buffers correct sequence at read side.
   uint32_t next_buffer_id_;
 
+  // Keeps track of number of expected buffer reads on the renderer side.
+  int expected_buffer_reads_;
+
+  // Counts the number of timeouts when verifying buffer reads.
+  int read_verification_timeouts_;
+
   // Vector of audio buses allocated during construction and deleted in the
   // destructor.
   ScopedVector<media::AudioBus> audio_buses_;