License property for company_name should come from device on android

The company_name was hardcoded in the CDM as "Google" for all devices.
On Android, it needs to come from the ro.product.manufacturer system
property.

bug: 9074091

This is a merge of https://widevine-internal-review.googlesource.com/#/c/5730/
from the Widevine CDM repository.

Change-Id: Ia3ae82abf350c32ba8b4d05b59e95361927dea40

libwvdrmengine/cdm/core/include/properties.h

@@ -39,6 +39,7 @@ class Properties {
   static inline bool use_certificates_as_identification() {
     return use_certificates_as_identification_;
   }
+  static bool GetCompanyName(std::string& company_name);
   static bool GetModelName(std::string& model_name);
   static bool GetArchitectureName(std::string& arch_name);
   static bool GetDeviceName(std::string& device_name);