Change EmeInitDataType to be an enum class

chrome/renderer/media/chrome_key_systems.cc

Index: chrome/renderer/media/chrome_key_systems.cc
diff --git a/chrome/renderer/media/chrome_key_systems.cc b/chrome/renderer/media/chrome_key_systems.cc
index 33fea4acb60925a1ae8253bf5ed21334e802f674..1b9f424048705cca5e61d35b2d3f4f00cec7954f 100644
--- a/chrome/renderer/media/chrome_key_systems.cc
+++ b/chrome/renderer/media/chrome_key_systems.cc
@@ -76,10 +76,10 @@ static void AddExternalClearKey(
   info.key_system = kExternalClearKeyKeySystem;
 
   info.supported_init_data_types =
-      media::EME_INIT_DATA_TYPE_WEBM | media::EME_INIT_DATA_TYPE_KEYIDS;
+    media::kInitDataTypeMaskWebM | media::kInitDataTypeMaskKeyIds;
   info.supported_codecs = media::EME_CODEC_WEBM_ALL;
 #if defined(USE_PROPRIETARY_CODECS)
-  info.supported_init_data_types |= media::EME_INIT_DATA_TYPE_CENC;
+  info.supported_init_data_types |= media::kInitDataTypeMaskCenc;
   info.supported_codecs |= media::EME_CODEC_MP4_ALL;
 #endif  // defined(USE_PROPRIETARY_CODECS)