Cas Client repo update-2.

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

plugin/include/widevine_media_cas_plugin.h

@@ -105,9 +105,11 @@ class WidevineCasPlugin : public CasPlugin, public CasEventListener {
   CasStatus HandleSetParentalControlAge(const CasData& data);
   CasStatus HandleLicenseRemoval(const CasData& license_id);
   CasStatus HandleAssignLicenseID(const CasData& license_id);
+  CasStatus HandlePluginVersionQuery();
+  CasStatus HandleEntitlementPeriodUpdateResponse(const CasData& response);
+
   // Returns true if the device has been provisioned with a device certificate.
   bool is_provisioned() const;
-
   // Event listener implementation
   void OnSessionRenewalNeeded() override;
   void OnSessionKeysChange(const KeyStatusMap& keys_status,
@@ -123,6 +125,10 @@ class WidevineCasPlugin : public CasPlugin, public CasEventListener {
   void OnSessionServiceBlockingUpdated(
       const WvCasSessionId& sessionId,
       const CasData& service_blocking) override;
+  void OnFingerprintingUpdated(const CasData& fingerprinting) override;
+  void OnServiceBlockingUpdated(const CasData& service_blocking) override;
+  void OnEntitlementPeriodUpdateNeeded(
+      const std::string& signed_license_request) override;
 
   // Choose to use |callback_| or |callback_ext_| to send back information.
   // |sessionId| is ignored if |callback_ext_| is null,
@@ -138,7 +144,8 @@ class WidevineCasPlugin : public CasPlugin, public CasEventListener {
   // Otherwise, first CA descriptor available to the plugin
   // is used to build a PSSH, and others are discarded.
   bool is_emm_request_sent_ = false;
-  std::string provision_data_;
+  // This is always the serialized PSSH data.
+  std::string init_data_;
   std::unique_ptr<WidevineCas> widevine_cas_api_;
 };