Delay OEMCrypto Termination

[ Merge of http://go/wvgerrit/89847 ]

This adds a platform specific property that allows OEMCrypto Termination
calls to be delayed. On android this allows a way to avoid
expensive back to back OEMCrypto_Terminate followed by Initialize
calls.

Bug: 136282358
Test: wv unit/integration tests
Change-Id: Ie5b4ff7503dafe77d974caac9c52fc1f169dec89

libwvdrmengine/cdm/core/include/properties.h

@@ -61,6 +61,9 @@ class Properties {
   static void set_provisioning_messages_are_binary(bool flag) {
     provisioning_messages_are_binary_ = flag;
   }
+  static inline bool delay_oem_crypto_termination() {
+    return delay_oem_crypto_termination_;
+  }
   static bool GetCompanyName(std::string* company_name);
   static bool GetModelName(std::string* model_name);
   static bool GetArchitectureName(std::string* arch_name);
@@ -147,6 +150,7 @@ class Properties {
   static bool allow_service_certificate_requests_;
   static bool device_files_is_a_real_filesystem_;
   static bool allow_restore_of_offline_licenses_with_release_;
+  static bool delay_oem_crypto_termination_;
   static std::unique_ptr<CdmClientPropertySetMap> session_property_set_;
 
   CORE_DISALLOW_COPY_AND_ASSIGN(Properties);