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diff --git a/third_party/libwebrtc/build/nocompile.gni b/third_party/libwebrtc/build/nocompile.gni
new file mode 100644
index 0000000000..5b4aeb8f4a
--- /dev/null
+++ b/third_party/libwebrtc/build/nocompile.gni
@@ -0,0 +1,137 @@
+# Copyright (c) 2011 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+# This file is meant to be included into an target to create a unittest that
+# invokes a set of no-compile tests.  A no-compile test is a test that asserts
+# a particular construct will not compile.
+#
+# Also see:
+#   http://dev.chromium.org/developers/testing/no-compile-tests
+#
+# To use this, create a gyp target with the following form:
+#
+# import("//build/nocompile.gni")
+# nocompile_test("my_module_nc_unittests") {
+#   sources = [
+#     'nc_testset_1.nc',
+#     'nc_testset_2.nc',
+#   ]
+#
+#   # optional extra include dirs:
+#   include_dirs = [ ... ]
+# }
+#
+# The .nc files are C++ files that contain code we wish to assert will not
+# compile.  Each individual test case in the file should be put in its own
+# #ifdef section.  The expected output should be appended with a C++-style
+# comment that has a python list of regular expressions.  This will likely
+# be greater than 80-characters. Giving a solid expected output test is
+# important so that random compile failures do not cause the test to pass.
+#
+# Example .nc file:
+#
+#   #if defined(TEST_NEEDS_SEMICOLON)  // [r"expected ',' or ';' at end of input"]
+#
+#   int a = 1
+#
+#   #elif defined(TEST_NEEDS_CAST)  // [r"invalid conversion from 'void*' to 'char*'"]
+#
+#   void* a = NULL;
+#   char* b = a;
+#
+#   #endif
+#
+# If we needed disable TEST_NEEDS_SEMICOLON, then change the define to:
+#
+#   DISABLE_TEST_NEEDS_SEMICOLON
+#   TEST_NEEDS_CAST
+#
+# The lines above are parsed by a regexp so avoid getting creative with the
+# formatting or ifdef logic; it will likely just not work.
+#
+# Implementation notes:
+# The .nc files are actually processed by a python script which executes the
+# compiler and generates a .cc file that is empty on success, or will have a
+# series of #error lines on failure, and a set of trivially passing gunit
+# TEST() functions on success. This allows us to fail at the compile step when
+# something goes wrong, and know during the unittest run that the test was at
+# least processed when things go right.
+
+import("//build/config/clang/clang.gni")
+import("//build/config/python.gni")
+import("//build/toolchain/toolchain.gni")
+import("//testing/test.gni")
+
+declare_args() {
+  # TODO(crbug.com/105388): make sure no-compile test is not flaky.
+  enable_nocompile_tests = (is_linux || is_chromeos || is_apple) && is_clang &&
+                           host_cpu == target_cpu
+}
+
+if (enable_nocompile_tests) {
+  import("//build/config/c++/c++.gni")
+  import("//build/config/sysroot.gni")
+  template("nocompile_test") {
+    nocompile_target = target_name + "_run_nocompile"
+
+    action_foreach(nocompile_target) {
+      testonly = true
+      script = "//tools/nocompile_driver.py"
+      sources = invoker.sources
+      deps = invoker.deps
+      if (defined(invoker.public_deps)) {
+        public_deps = invoker.public_deps
+      }
+
+      result_path = "$target_gen_dir/{{source_name_part}}_nc.cc"
+      depfile = "${result_path}.d"
+      outputs = [ result_path ]
+      args = [
+        rebase_path("$clang_base_path/bin/clang++", root_build_dir),
+        "4",  # number of compilers to invoke in parallel.
+        "{{source}}",
+        rebase_path(result_path, root_build_dir),
+        "--",
+        "-nostdinc++",
+        "-isystem" + rebase_path("$libcxx_prefix/include", root_build_dir),
+        "-isystem" + rebase_path("$libcxxabi_prefix/include", root_build_dir),
+        "-std=c++14",
+        "-Wall",
+        "-Werror",
+        "-Wfatal-errors",
+        "-Wthread-safety",
+        "-I" + rebase_path("//", root_build_dir),
+        "-I" + rebase_path("//third_party/abseil-cpp/", root_build_dir),
+        "-I" + rebase_path("//buildtools/third_party/libc++/", root_build_dir),
+        "-I" + rebase_path(root_gen_dir, root_build_dir),
+
+        # TODO(https://crbug.com/989932): Track build/config/compiler/BUILD.gn
+        "-Wno-implicit-int-float-conversion",
+      ]
+
+      if (is_apple && host_os != "mac") {
+        args += [ "--target=x86_64-apple-macos" ]
+      }
+
+      # Iterate over any extra include dirs and append them to the command line.
+      if (defined(invoker.include_dirs)) {
+        foreach(include_dir, invoker.include_dirs) {
+          args += [ "-I" + rebase_path(include_dir, root_build_dir) ]
+        }
+      }
+
+      if (sysroot != "") {
+        args += [
+          "--sysroot",
+          rebase_path(sysroot, root_build_dir),
+        ]
+      }
+    }
+
+    test(target_name) {
+      deps = invoker.deps + [ ":$nocompile_target" ]
+      sources = get_target_outputs(":$nocompile_target")
+    }
+  }
+}