Bug 1405258 - Update libcubeb to 40cd4ad0 to fix warnings as errors bustage.

MozReview-Commit-ID: 53knVqcswLX

--HG--
extra : rebase_source : 7379c68360a6004da1afcea920195e5dbca4f9c0

media/libcubeb/README_MOZILLA

@@ -5,4 +5,4 @@ Makefile.in build files for the Mozilla build system.
 
 The cubeb git repository is: git://github.com/kinetiknz/cubeb.git
 
-The git commit ID used was ba2a89611875cd9f2dabae99a362461b03c0dd3d (2017-10-03 11:34:20 +0200)
+The git commit ID used was 40cd4ad03b68a215e985979c96783824f19e288f (2017-10-03 13:38:45 +0200)

media/libcubeb/src/cubeb_resampler.cpp

@@ -35,6 +35,11 @@ to_speex_quality(cubeb_resampler_quality q)
   }
 }
 
+uint32_t min_buffered_audio_frame(uint32_t sample_rate)
+{
+  return sample_rate / 20;
+}
+
 template<typename T>
 passthrough_resampler<T>::passthrough_resampler(cubeb_stream * s,
                                                 cubeb_data_callback cb,

media/libcubeb/src/cubeb_resampler_internal.h

@@ -38,17 +38,13 @@ MOZ_END_STD_NAMESPACE
 #include <stdio.h>
 
 /* This header file contains the internal C++ API of the resamplers, for testing. */
-namespace {
+
 // When dropping audio input frames to prevent building
 // an input delay, this function returns the number of frames
 // to keep in the buffer.
 // @parameter sample_rate The sample rate of the stream.
 // @return A number of frames to keep.
-uint32_t min_buffered_audio_frame(uint32_t sample_rate)
-{
-  return sample_rate / 20;
-}
-}
+uint32_t min_buffered_audio_frame(uint32_t sample_rate);
 
 int to_speex_quality(cubeb_resampler_quality q);