Implement Chromium side of MediaKeys.isTypeSupported().

components/cdm/renderer/widevine_key_systems.cc

Index: components/cdm/renderer/widevine_key_systems.cc
diff --git a/components/cdm/renderer/widevine_key_systems.cc b/components/cdm/renderer/widevine_key_systems.cc
index 2a41322112eac5fac5e2dd64a7c46eff29705304..69178669937a1c1c761cf2a73c4b5e36d9ab9574 100644
--- a/components/cdm/renderer/widevine_key_systems.cc
+++ b/components/cdm/renderer/widevine_key_systems.cc
@@ -8,6 +8,9 @@
 #include <vector>
 
 #include "base/logging.h"
+// TODO(sandersd): Violates DEPS.

[ddorwin, 2014/09/13 01:20:44]

Didn't you fix this?

[sandersd (OOO until July 31), 2014/09/22 23:45:52]

Done.

+#include "content/public/common/eme_codec.h"
+#include "content/public/common/eme_init_data_type.h"
 
 #include "widevine_cdm_version.h"  // In SHARED_INTERMEDIATE_DIR.
 
@@ -49,6 +52,9 @@ void AddWidevineWithCodecs(WidevineCdmType widevine_cdm_type,
   // initDataType.
   info.supported_codecs = supported_codecs;
 
+  info.supported_init_data_types = (content::EME_INIT_DATA_TYPE_CENC |

[ddorwin, 2014/09/13 01:20:44]

Note that the general logic will filter out unsupported types based on
container. (Hopefully you can phrase that better. :) )

[sandersd (OOO until July 31), 2014/09/22 23:45:52]

Done.

+                                    content::EME_INIT_DATA_TYPE_WEBM);
+
 #if defined(ENABLE_PEPPER_CDMS)
   info.pepper_type = kWidevineCdmPluginMimeType;
 #endif  // defined(ENABLE_PEPPER_CDMS)