Regular sync.

Changes include:
1. Fix refreshkeys when handling renewal response.
2. Change ECM start detect method.
3. Fix signing key truncation.
4. Reformat C++ code.
5. Return license_id in LICENSE_CAS_READY payload.
6. Expose OEMCrypto API version in the license request.
7. Add support for newly added widevine cas ids.
8. Store content iv and encryption mode info to entitled key.
9. Upgrade ODK library to 16.4.

plugin/include/cas_media_id.h

@@ -15,8 +15,6 @@ class CasMediaId {
   virtual CasStatus initialize(const std::string& init_data) = 0;
   virtual const std::string content_id() = 0;
   virtual const std::string provider_id() = 0;
-  virtual const int group_ids_size() = 0;
-  virtual const std::string group_id() = 0;
 };
 
 }  // namespace wvcas