Cas Client repo update-2.

-Parse EMM in Cas plugin
-Entitlement key rotation support
-Multi_content_license support

wvutil/include/cas_properties.h

@@ -36,6 +36,9 @@ class Properties {
   // Returned path could be either absolute or relative.
   // Returns false if unable to set the value.
   static bool GetOEMCryptoPath(std::string* path);
+  // Sets |version| to Widevine CAS plugin version. Returns false if unable to
+  // set the value.
+  static bool GetWvCasPluginVersion(std::string& version);
 };
 
 }  // namespace wvcas

wvutil/src/android_properties.cpp

@@ -2,13 +2,16 @@
 // source code may only be used and distributed under the Widevine Master
 // License Agreement.
 
+#include <cutils/properties.h>
+
 #include "cas_properties.h"
 #include "log.h"
 
-#include <cutils/properties.h>
-
 namespace {
 
+// Version format: OEMCrypto_major.OEMCrypto_minor.Plugin_version
+constexpr char kWvCasPluginVersion[] = "16.4.1";
+
 bool GetAndroidProperty(const char* key, std::string* value) {
   char val[PROPERTY_VALUE_MAX];
   if (!key) {
@@ -77,4 +80,9 @@ bool Properties::GetOEMCryptoPath(std::string* path) {
   return true;
 }
 
+bool Properties::GetWvCasPluginVersion(std::string& version) {
+  version = kWvCasPluginVersion;
+  return true;
+}
+
 }  // namespace wvcas