Cherry pick 18.4 changes to udc-widevine-dev

Get the udc-widevine-dev Android branch and oemcrypto-v18 cdm branch in
sync. The commit ID for 18.4 on oemcrypto-v18 is
a2f23a2281e5e06dc2867585bdc516fa132b6396.

Merged from go/wvgerrit/190151

Bug: 290252845
Test: WVTS tests are running and passing
Change-Id: I457332e7ca70a5b5169345e1279b3eb9f18413b6

libwvdrmengine/oemcrypto/test/fuzz_tests/partner_oemcrypto_fuzztests.gypi

@@ -0,0 +1,86 @@
+# Copyright 2021 Google LLC. All Rights Reserved. This file and proprietary
+# source code may only be used and distributed under the Widevine License
+# Agreement.
+
+{
+  'variables': {
+    'boringssl_libcrypto_path%': '../../../third_party/boringssl/boringssl.gyp:crypto',
+    'boringssl_libssl_path%': '../../../third_party/boringssl/boringssl.gyp:ssl',
+    'oemcrypto_dir': '../..',
+    'platform_specific_dir': '../../../linux/src',
+    'privacy_crypto_impl%': 'boringssl',
+    'oemcrypto_static_library%': '',
+    'util_dir': '../../../util',
+  },
+  'sources': [
+    '../../odk/src/core_message_deserialize.cpp',
+    '../../odk/src/core_message_serialize.cpp',
+    '../oec_device_features.cpp',
+    '../oec_key_deriver.cpp',
+    '../oemcrypto_corpus_generator_helper.cpp',
+    '../oec_session_util.cpp',
+    '../oemcrypto_corpus_generator_helper.cpp',
+    'oemcrypto_fuzz_helper.cc',
+    '../oemcrypto_session_tests_helper.cpp',
+    '<(platform_specific_dir)/file_store.cpp',
+    '<(platform_specific_dir)/log.cpp',
+    '<(util_dir)/src/platform.cpp',
+    '<(util_dir)/src/rw_lock.cpp',
+    '<(util_dir)/src/string_conversions.cpp',
+    '<(util_dir)/src/string_format.cpp',
+    '<(util_dir)/test/test_sleep.cpp',
+    '<(util_dir)/test/test_clock.cpp',
+  ],
+  'include_dirs': [
+    '../../../third_party/fuzz',
+    '<(util_dir)/include',
+    '<(util_dir)/test',
+    '<(oemcrypto_dir)/include',
+    '<(oemcrypto_dir)/test',
+    '<(oemcrypto_dir)/test/fuzz_tests',
+    '<(oemcrypto_dir)/odk/include',
+    '<(oemcrypto_dir)/odk/src',
+    '<(oemcrypto_dir)/opk/oemcrypto_ta',
+  ],
+  'includes': [
+    '../../../util/libssl_dependency.gypi',
+  ],
+  'dependencies': [
+    '../../../third_party/googletest.gyp:gtest',
+    '../../../third_party/googletest.gyp:gmock',
+    '<(oemcrypto_dir)/util/oec_ref_util.gyp:oec_ref_util',
+  ],
+  'defines': [
+    'OEMCRYPTO_FUZZ_TESTS',
+  ],
+  # Include flags to build fuzzer binaries for cluster fuzz.
+  'cflags': [
+    '-fPIC',
+    '-O0',
+    '-fno-omit-frame-pointer',
+    '-U_FORTIFY_SOURCE',
+    '-fsanitize=fuzzer,address,undefined',
+    '-fno-sanitize-recover=address,undefined',
+    # Need -g flag to include source line numbers in error stack trace.
+    '-g3',
+  ],
+  'cflags_c': [
+    '-std=c11',
+    '-D_POSIX_C_SOURCE=200809L',
+  ],
+  'cflags_cc': [
+    '-std=c++14',
+    '-frtti',
+  ],
+  'ldflags': [
+    '-fPIC',
+    # Sanitizers with link-time components must be repeated here.
+    '-fsanitize=fuzzer,address',
+  ],
+  'libraries': [
+    '-lpthread',
+    # include absolute path to oemcrypto static library on the machine where
+    # fuzz tests are being built here.
+    '<(oemcrypto_static_library)',
+  ],
+}