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/platforms/x86-64/fuzzer_settings.gypi

@@ -0,0 +1,78 @@
+# Copyright 2018 Google LLC. All Rights Reserved. This file and proprietary
+# source code may only be used and distributed under the Widevine
+# License Agreement.
+{
+  # Here you can set platform-specific compiler settings.
+  'target_defaults': {
+    # These are flags passed to the compiler for all C & C++ files.
+    'cflags': [
+      '-fsanitize=address',
+      '-fsanitize-coverage=trace-pc-guard',
+      '-fPIC',
+    ],
+
+    # These are flags passed to the compiler for plain C only.
+    'cflags_c': [
+      '-fsanitize-coverage=trace-pc-guard',
+      '-fsanitize=address',
+      '-fPIC',
+    ],
+
+    # These are flags passed to the compiler for C++ only.
+    'cflags_cc': [
+      '-fsanitize-coverage=trace-pc-guard',
+      '-fsanitize=address',
+      '-fPIC',
+    ],
+
+    # These are flags passed to the linker.
+    'ldflags': [
+      '-fsanitize=address',
+    ],
+
+    # These are macros set by the compiler.
+    'defines': [
+      #'EXAMPLE_MACRO_WITH_NO_VALUE',
+      #'EXAMPLE_KEY=EXAMPLE_VALUE',
+    ],
+
+    # These are additional include paths to search for headers.
+    'include_dirs': [
+    ],
+
+    'target_conditions': [
+      ['_toolset == "host"', {
+        # These are settings specifically for the host toolchain.
+        # The extra equals sign in the key name instructs gyp to replace
+        # the generic settings above rather than append to them.
+        'cflags=': [
+          '-fsanitize-coverage=trace-pc-guard',
+          '-fsanitize=address',
+          '-fPIC',
+        ],
+
+        'cflags_c=': [
+          '-fsanitize-coverage=trace-pc-guard',
+          '-fsanitize=address',
+          '-fPIC',
+        ],
+
+        'cflags_cc=': [
+          '-fsanitize-coverage=trace-pc-guard',
+          '-fsanitize=address',
+          '-fPIC',
+        ],
+
+        'ldflags=': [
+          '-fsanitize=address',
+        ],
+
+        'defines=': [
+        ],
+
+        'include_dirs=': [
+        ],
+      }], # end _toolset == "host" condition
+    ], # end target_conditions
+  }, # end target_defaults
+}