Dynamically allocate more memory to AudioBlockFifo

media/base/audio_block_fifo.h

Index: media/base/audio_block_fifo.h
diff --git a/media/base/audio_block_fifo.h b/media/base/audio_block_fifo.h
index fdb5cef6225664dc81974a30764c1bee983813c4..94786b9eb5c270b0575d51fce0ca9ddcca864553 100644
--- a/media/base/audio_block_fifo.h
+++ b/media/base/audio_block_fifo.h
@@ -45,10 +45,16 @@ class MEDIA_EXPORT AudioBlockFifo {
   // Number of unfilled frames in the whole FIFO.
   int GetUnfilledFrames() const;
 
+  // Dynamically increase |blocks| of memory to the FIFO.
+  void IncreaseCapacity(int blocks);
+
  private:
   // The actual FIFO is a vector of audio buses.
   ScopedVector<AudioBus> audio_blocks_;
 
+  // Number of channels in AudioBus.
+  const int channels_;
+
   // Maximum number of frames of data one block of memory can contain.
   // This value is set by |frames| in the constructor.
   const int block_frames_;