Add new CDM API call: Cdm::removeUsageTable()

[ Merge of http://go/wvgerrit/23168 ]

Bug: 33380441

Test: WV unit/integration tests
Change-Id: Id63c31cdb367704b0bbb77ea9ea597cc86259eeb

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.