Support configuring the audio buffer duration in the Pepper MediaStream 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) {
@@ skipping 10 matching lines @@
 
     attributes.buffers = 8;
     EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
 
     attributes.buffers = 1024;
     EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
 
     attributes.buffers = -1;
     EXPECT_FALSE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
   }
+
+  // Verify duration
+  {
+    MediaStreamAudioTrackShared::Attributes attributes;
+    attributes.duration = 0;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.duration = 10;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.duration = 10000;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.duration = 123;
+    EXPECT_TRUE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.duration = 9;
+    EXPECT_FALSE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+
+    attributes.duration = -1;
+    EXPECT_FALSE(MediaStreamAudioTrackShared::VerifyAttributes(attributes));
+  }
 }
 
 }  // namespace ppapi