Support configuring number of audio buffers in MediaStream Pepper API.

ppapi/shared_impl/media_stream_audio_track_shared_unittest.cc

+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "ppapi/shared_impl/media_stream_audio_track_shared.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace ppapi {
+
+TEST(MediaStreamAudioTrackShared, Verify) {
+  {
+    MediaStreamAudioTrackShared::Attributes attributes;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+  }
+
+  // Verify buffers
+  {
+    MediaStreamAudioTrackShared::Attributes attributes;
+    attributes.buffers = 0;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.buffers = 8;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.buffers = 1024;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.buffers = -1;
+    EXPECT_FALSE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+  }
+}
+
+}  // namespace ppapi