Revert of Make OS audio buffer size limits visible.

content/shell/renderer/layout_test/layout_test_content_renderer_client.cc

Index: content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
diff --git a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
index b275d6afc02afba58af39c2e04dddc7bcedd7c35..bf0ffcac6a2a83aca8359259c36f478e4b344387 100644
--- a/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
+++ b/content/shell/renderer/layout_test/layout_test_content_renderer_client.cc
@@ -217,9 +217,11 @@
           media::AudioLatency::GetHighLatencyBufferSize(hw_sample_rate, 0);
       break;
     case blink::WebAudioLatencyHint::kCategoryExact:
-      buffer_size = media::AudioLatency::GetExactBufferSize(
-          base::TimeDelta::FromSecondsD(latency_hint.Seconds()), hw_sample_rate,
-          hw_buffer_size);
+      // TODO(andrew.macpherson@soundtrap.com): http://crbug.com/708917
+      buffer_size = std::min(
+          4096, media::AudioLatency::GetExactBufferSize(
+                    base::TimeDelta::FromSecondsD(latency_hint.Seconds()),
+                    hw_sample_rate, hw_buffer_size));
       break;
     default:
       NOTREACHED();