Support floating-point audio output for Linux

content/renderer/renderer_blink_platform_impl.cc

Index: content/renderer/renderer_blink_platform_impl.cc
diff --git a/content/renderer/renderer_blink_platform_impl.cc b/content/renderer/renderer_blink_platform_impl.cc
index 3ea9437961ce40fd8765b508fc131f8f5b4233d7..71f4ae94314e3316cd6dd84ab6634aa4bcab4e57 100644
--- a/content/renderer/renderer_blink_platform_impl.cc
+++ b/content/renderer/renderer_blink_platform_impl.cc
@@ -748,7 +748,7 @@ WebAudioDevice* RendererBlinkPlatformImpl::createAudioDevice(
   // For CHANNEL_LAYOUT_DISCRETE, pass the explicit channel count along with
   // the channel layout when creating an |AudioParameters| object.
   media::AudioParameters params(media::AudioParameters::AUDIO_PCM_LOW_LATENCY,
-                                layout, static_cast<int>(sample_rate), 16,
+                                layout, static_cast<int>(sample_rate), 32,

[DaleCurtis, 2016/11/01 18:51:37]

Drop this change. I can't guarantee it'll plumb properly. Instead set it in
pulse_output/pulse_input.

[Raymond Toy, 2016/11/01 22:01:47]

You're right. It's not plumbed through.

                                 buffer_size);
   params.set_channels_for_discrete(channels);