Add |is_encrypted| in mojo AudioDecoderConfig.

media/mojo/services/media_type_converters_unittest.cc

Index: media/mojo/services/media_type_converters_unittest.cc
diff --git a/media/mojo/services/media_type_converters_unittest.cc b/media/mojo/services/media_type_converters_unittest.cc
index ecf61880161fc6ec739ef68604c3fd5ce16a4ab9..ac05e142da25e3c7cefc202dcf3a8b58b4f093f3 100644
--- a/media/mojo/services/media_type_converters_unittest.cc
+++ b/media/mojo/services/media_type_converters_unittest.cc
@@ -157,5 +157,22 @@ TEST(MediaTypeConvertersTest, ConvertAudioDecoderConfig_NullExtraData) {
   EXPECT_TRUE(result.Matches(config));
 }
 
+TEST(MediaTypeConvertersTest, ConvertAudioDecoderConfig_Encrypted) {
+  media::AudioDecoderConfig config;
+  config.Initialize(media::kCodecAAC,
+                    media::kSampleFormatU8,
+                    media::CHANNEL_LAYOUT_SURROUND,
+                    48000,
+                    NULL,
+                    0,
+                    true,  // Is encrypted.
+                    false,
+                    base::TimeDelta(),
+                    0);
+  AudioDecoderConfigPtr ptr(AudioDecoderConfig::From(config));
+  media::AudioDecoderConfig result(ptr.To<media::AudioDecoderConfig>());
+  EXPECT_TRUE(result.Matches(config));
+}
+
 }  // namespace test
 }  // namespace mojo