diff --git a/libwvdrmengine/cdm/core/include/cdm_engine.h b/libwvdrmengine/cdm/core/include/cdm_engine.h
index 6adcda6e..1d841f39 100644
--- a/libwvdrmengine/cdm/core/include/cdm_engine.h
+++ b/libwvdrmengine/cdm/core/include/cdm_engine.h
@@ -172,6 +172,9 @@ class CdmEngine {
   virtual CdmResponseType ListStoredLicenses(
       CdmSecurityLevel security_level, std::vector<std::string>* key_set_ids);
 
+  // Delete OEMCrypto usage tables. Used by Unprovision().
+  CdmResponseType DeleteUsageTable(CdmSecurityLevel security_level);
+
   // Usage related methods for streaming licenses
   // Retrieve a random usage info from the list of all usage infos for this app
   // id.
diff --git a/libwvdrmengine/cdm/core/src/cdm_engine.cpp b/libwvdrmengine/cdm/core/src/cdm_engine.cpp
index d00d3340..48b784ab 100644
--- a/libwvdrmengine/cdm/core/src/cdm_engine.cpp
+++ b/libwvdrmengine/cdm/core/src/cdm_engine.cpp
@@ -902,32 +902,28 @@ CdmResponseType CdmEngine::Unprovision(CdmSecurityLevel security_level) {
       LOGE("CdmEngine::Unprovision: unable to delete files");
       return UNPROVISION_ERROR_3;
     }
-
-    CryptoSession crypto_session(metrics_.GetCryptoMetrics());
-    CdmResponseType status;
-    M_TIME(
-        status = crypto_session.Open(
-            security_level == kSecurityLevelL3 ?
-                kLevel3 :
-                kLevelDefault),
-        metrics_.GetCryptoMetrics(),
-        crypto_session_open_,
-        status,
-        security_level == kSecurityLevelL3 ? kLevel3 : kLevelDefault);
-    if (NO_ERROR != status) {
-      LOGE("CdmEngine::Unprovision: error opening crypto session: %d", status);
-      return UNPROVISION_ERROR_4;
-    }
-    status = crypto_session.DeleteAllUsageReports();
-    metrics_.GetCryptoMetrics()->crypto_session_delete_all_usage_reports_.
-        Increment(status);
-    if (status != NO_ERROR) {
-      LOGE("CdmEngine::Unprovision: error deleteing usage reports: %d", status);
-    }
-    return status;
+    return DeleteUsageTable(security_level);
   }
 }
 
+CdmResponseType CdmEngine::DeleteUsageTable(CdmSecurityLevel security_level) {
+  scoped_ptr<CryptoSession> crypto_session(
+      new CryptoSession(metrics_.GetCryptoMetrics()));
+  CdmResponseType status = crypto_session->Open(
+      security_level == kSecurityLevelL3 ? kLevel3 : kLevelDefault);
+  if (NO_ERROR != status) {
+    LOGE("CdmEngine::DeleteUsageTable: error opening crypto session: %d",
+         status);
+    return UNPROVISION_ERROR_4;
+  }
+  status = crypto_session->DeleteAllUsageReports();
+  if (status != NO_ERROR) {
+    LOGE("CdmEngine::DeleteUsageTable: error deleting usage reports: %d",
+         status);
+  }
+  return status;
+}
+
 CdmResponseType CdmEngine::ListStoredLicenses(
     CdmSecurityLevel security_level, std::vector<std::string>* key_set_ids) {
   DeviceFiles handle(file_system_);