Created a unified Android test for coverage.

[ Merge of http://go/wvgerrit/143889 ]

New test binary for generating code coverage information.  Run several
reliable, short runnning unit tests.  Actual test failures do not
affect the result of this test.

Bug: 138941105
Bug: 191681397
Test: Android cdm_coverage_test
Change-Id: I6b74d361a8a0e2896e0489acaa64d264158ecaa4

libwvdrmengine/cdm/test/cdm_coverage_main.cpp

@@ -0,0 +1,49 @@
+// Copyright 2022 Google LLC. All Rights Reserved. This file and proprietary
+// source code may only be used and distributed under the Widevine License
+// Agreement.
+#include <stdlib.h>
+
+#include <string>
+
+#include "gtest/gtest.h"
+
+#include "log.h"
+
+namespace wvcdm {
+namespace {
+void UpdateGtestFilter() {
+  const std::string initial_filter = ::testing::GTEST_FLAG(filter);
+  if (!initial_filter.empty()) {
+    LOGW("Ignoring provided GTEST filter: %s", initial_filter.c_str());
+  }
+  std::string final_filter("-");
+  // Sleepy tests.
+  final_filter.append("*VerifyUsageTimes*:*Refresh*:*TimingTest*");
+  final_filter.append(":*KeyDuration*:*CdmUseCase*");
+  final_filter.append(":*ExtendedDurationTest*");
+  // Slow tests.
+  final_filter.append(":*OEMCryptoMemory*:*Huge*:*NonceFlood*");
+  final_filter.append(
+      ":*TwoHundredEntries*:*ManyUsageEntries*:*UsageTableDefrag*");
+  final_filter.append(
+      ":*DecryptMax*:*MaxTotalKeys*:*OEMCryptoSessionTestsDecryptTests*");
+  final_filter.append(":*SharedMutex*:*Parallel*");
+  // Flacky tests.
+  final_filter.append(":*Repeated/ParallelCdmTest*");
+  // L1 only tests.
+  final_filter.append(":*Level1Required");
+  ::testing::GTEST_FLAG(filter) = final_filter;
+}
+}  // namespace
+}  // namespace wvcdm
+
+int main(int argc, char** argv) {
+  LOGI("Running Android CDM tests");
+  testing::InitGoogleTest(&argc, argv);
+  wvcdm::UpdateGtestFilter();
+  const int status = RUN_ALL_TESTS();
+  LOGD("CDM coverage test complete with status %d", status);
+  // Test is for coverage information only, actual test failure
+  // should not change the final result of the test executable.
+  return EXIT_SUCCESS;
+}