Enforce OEMCrypto insufficient resources error reporting

[ Merge of http://go/wvgerrit/63682 and http://go/wvgerrit/4977904 ]

Enforce OEMCrypto insufficient resources error reporting in CDM tests.
In addition, when CreateNew/LoadUsageEntry fails with OEMCrypto
insufficient resources error, delete a random usage entry
and retry. The current behavior evicts low index entries
from the usage table, which was a crude attempt to emulate a LRU.
This was deficient as, on occasion, it will result in the deletion
of a recently added usage entry.

Bug: 111260263
Bug: 113828866
Bug: 120433165

Test: Widevine OEMCrypto tests, integration tests. GtsMediaTestCases.
      Play movies and Netflix playback tests.
      GtsMediaTestCases MediaDrmTest#testUsageTableCapacity

Change-Id: I63340f76d1e2af3c6834b98ad816e11eea18fc7f

libwvdrmengine/cdm/core/include/usage_table_header.h

@@ -71,6 +71,14 @@ class UsageTableHeader {
                                       DeviceFiles* handle,
                                       metrics::CryptoMetrics* metrics);
 
+  // Test only method. This method emulates the behavior of DeleteEntry
+  // without actually invoking OEMCrypto (through CryptoSession)
+  // or storage (through DeviceFiles). It modifies internal data structures
+  // when DeleteEntry is mocked. This allows one to test methods that are
+  // dependent on DeleteEntry without having to set expectations
+  // for the objects that DeleteEntry depends on.
+  void DeleteEntryForTest(uint32_t usage_entry_number);
+
  private:
   CdmResponseType MoveEntry(uint32_t from /* usage entry number */,
                             const CdmUsageEntry& from_usage_entry,
@@ -119,6 +127,9 @@ class UsageTableHeader {
 
   metrics::CryptoMetrics alternate_crypto_metrics_;
 
+  // TODO(rfrias): Move to utility class
+  uint32_t GetRandomInRange(size_t upper_bound_inclusive);
+
   // Test related declarations
   friend class UsageTableHeaderTest;