Support excluding Google Test extensions

build/secondary/testing/gtest/BUILD.gn

 # Copyright 2014 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.
 
+import("//build_overrides/gtest.gni")
+
 config("gtest_config") {
   visibility = [
     ":*",
     "//testing/gmock:*",  # gmock also shares this config.
   ]
 
   defines = [
     # In order to allow regex matches in gtest to be shared between Windows
     # and other systems, we tell gtest to always use it's internal engine.
     "GTEST_HAS_POSIX_RE=0",
@@ skipping 69 matching lines @@
     "include/gtest/internal/gtest-internal.h",
     "include/gtest/internal/gtest-linked_ptr.h",
     "include/gtest/internal/gtest-param-util-generated.h",
     "include/gtest/internal/gtest-param-util.h",
     "include/gtest/internal/gtest-port.h",
     "include/gtest/internal/gtest-string.h",
     "include/gtest/internal/gtest-tuple.h",
     "include/gtest/internal/gtest-type-util.h",
 
     #"gtest/src/gtest-all.cc",  # Not needed by our build.
-    "../multiprocess_func_list.cc",
-    "../multiprocess_func_list.h",
-    "../platform_test.h",
     "src/gtest-death-test.cc",
     "src/gtest-filepath.cc",
     "src/gtest-internal-inl.h",
     "src/gtest-port.cc",
     "src/gtest-printers.cc",
     "src/gtest-test-part.cc",
     "src/gtest-typed-test.cc",
     "src/gtest.cc",
   ]
 
+  if (gtest_include_multiprocess) {
+    sources += [
+      "../multiprocess_func_list.cc",
+      "../multiprocess_func_list.h",
+    ]
+  }
+
+  if (gtest_include_platform_test) {
+    sources += [ "../platform_test.h" ]
+  }
+
   if (is_mac || is_ios) {
     if (is_ios) {
       set_sources_assignment_filter([])
     }
     sources += [
       "../gtest_mac.h",
       "../gtest_mac.mm",
-      "../platform_test_mac.mm",
     ]
+    if (gtest_include_platform_test) {
+      sources += [ "../platform_test_mac.mm" ]
+    }
     set_sources_assignment_filter(sources_assignment_filter)
   }
 
   if (is_ios) {
     sources += [
       "../coverage_util_ios.cc",
       "../coverage_util_ios.h",
     ]
   }
 
@@ skipping 13 matching lines @@
 
 source_set("gtest_main") {
   testonly = true
   sources = [
     "src/gtest_main.cc",
   ]
   deps = [
     ":gtest",
   ]
 }