media config: expand is_encrypted to a struct.

media/base/audio_decoder_config.cc

Index: media/base/audio_decoder_config.cc
diff --git a/media/base/audio_decoder_config.cc b/media/base/audio_decoder_config.cc
index 213cb10edc41881a16b8e5cdb67cf0b43e685503..b0bca7b3bb42e955b749d64548752a670e33a210 100644
--- a/media/base/audio_decoder_config.cc
+++ b/media/base/audio_decoder_config.cc
@@ -16,18 +16,18 @@ AudioDecoderConfig::AudioDecoderConfig()
       channel_layout_(CHANNEL_LAYOUT_UNSUPPORTED),
       samples_per_second_(0),
       bytes_per_frame_(0),
-      is_encrypted_(false),
-      codec_delay_(0) {
-}
+      encryption_scheme_(false),
+      codec_delay_(0) {}
 
-AudioDecoderConfig::AudioDecoderConfig(AudioCodec codec,
-                                       SampleFormat sample_format,
-                                       ChannelLayout channel_layout,
-                                       int samples_per_second,
-                                       const std::vector<uint8_t>& extra_data,
-                                       bool is_encrypted) {
+AudioDecoderConfig::AudioDecoderConfig(
+    AudioCodec codec,
+    SampleFormat sample_format,
+    ChannelLayout channel_layout,
+    int samples_per_second,
+    const std::vector<uint8_t>& extra_data,
+    const EncryptionScheme& encryption_scheme) {
   Initialize(codec, sample_format, channel_layout, samples_per_second,
-             extra_data, is_encrypted, base::TimeDelta(), 0);
+             extra_data, encryption_scheme, base::TimeDelta(), 0);
 }
 
 void AudioDecoderConfig::Initialize(AudioCodec codec,
@@ -35,7 +35,7 @@ void AudioDecoderConfig::Initialize(AudioCodec codec,
                                     ChannelLayout channel_layout,
                                     int samples_per_second,
                                     const std::vector<uint8_t>& extra_data,
-                                    bool is_encrypted,
+                                    const EncryptionScheme& encryption_scheme,
                                     base::TimeDelta seek_preroll,
                                     int codec_delay) {
   codec_ = codec;
@@ -44,7 +44,7 @@ void AudioDecoderConfig::Initialize(AudioCodec codec,
   sample_format_ = sample_format;
   bytes_per_channel_ = SampleFormatToBytesPerChannel(sample_format);
   extra_data_ = extra_data;
-  is_encrypted_ = is_encrypted;
+  encryption_scheme_ = encryption_scheme;
   seek_preroll_ = seek_preroll;
   codec_delay_ = codec_delay;
 
@@ -72,7 +72,7 @@ bool AudioDecoderConfig::Matches(const AudioDecoderConfig& config) const {
           (channel_layout() == config.channel_layout()) &&
           (samples_per_second() == config.samples_per_second()) &&
           (extra_data() == config.extra_data()) &&
-          (is_encrypted() == config.is_encrypted()) &&
+          (encryption_scheme().Matches(config.encryption_scheme())) &&
           (sample_format() == config.sample_format()) &&
           (seek_preroll() == config.seek_preroll()) &&
           (codec_delay() == config.codec_delay()));
@@ -129,4 +129,8 @@ std::string AudioDecoderConfig::GetHumanReadableCodecName() const {
   return "";
 }
 
+bool AudioDecoderConfig::is_encrypted() const {
+  return encryption_scheme_.is_encrypted();
+}
+
 }  // namespace media