Move gn secondary_source to the build/ directory

tools/gn/secondary/testing/gtest/BUILD.gn

-# Copyright (c) 2013 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.
-
-config("gtest_config") {
-  visibility = [
-    ":*",
-    "//testing/gmock:*",  # gmock also shares this config.
-  ]
-
-  defines = [
-    "UNIT_TEST",
-
-    # 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",
-  ]
-
-  # Gtest headers need to be able to find themselves.
-  include_dirs = [ "include" ]
-
-  if (is_win) {
-    cflags = [ "/wd4800" ]  # Unused variable warning.
-  }
-
-  if (is_posix) {
-    defines += [
-      # gtest isn't able to figure out when RTTI is disabled for gcc
-      # versions older than 4.3.2, and assumes it's enabled.  Our Mac
-      # and Linux builds disable RTTI, and cannot guarantee that the
-      # compiler will be 4.3.2. or newer.  The Mac, for example, uses
-      # 4.2.1 as that is the latest available on that platform.  gtest
-      # must be instructed that RTTI is disabled here, and for any
-      # direct dependents that might include gtest headers.
-      "GTEST_HAS_RTTI=0",
-    ]
-  }
-
-  if (is_android) {
-    defines += [
-      # We want gtest features that use tr1::tuple, but we currently
-      # don't support the variadic templates used by libstdc++'s
-      # implementation. gtest supports this scenario by providing its
-      # own implementation but we must opt in to it.
-      "GTEST_USE_OWN_TR1_TUPLE=1",
-
-      # GTEST_USE_OWN_TR1_TUPLE only works if GTEST_HAS_TR1_TUPLE is set.
-      # gtest r625 made it so that GTEST_HAS_TR1_TUPLE is set to 0
-      # automatically on android, so it has to be set explicitly here.
-      "GTEST_HAS_TR1_TUPLE=1",
-    ]
-  }
-}
-
-static_library("gtest") {
-  sources = [
-    "include/gtest/gtest-death-test.h",
-    "include/gtest/gtest-message.h",
-    "include/gtest/gtest-param-test.h",
-    "include/gtest/gtest-printers.h",
-    "include/gtest/gtest-spi.h",
-    "include/gtest/gtest-test-part.h",
-    "include/gtest/gtest-typed-test.h",
-    "include/gtest/gtest.h",
-    "include/gtest/gtest_pred_impl.h",
-    "include/gtest/internal/gtest-death-test-internal.h",
-    "include/gtest/internal/gtest-filepath.h",
-    "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.
-    "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",
-    "../multiprocess_func_list.cc",
-    "../multiprocess_func_list.h",
-    "../platform_test.h",
-  ]
-
-  if (is_mac) {
-    sources += [
-      "../gtest_mac.h",
-      "../gtest_mac.mm",
-      "../platform_test_mac.mm",
-    ]
-  }
-
-  include_dirs = [ "." ]
-
-  all_dependent_configs = [ ":gtest_config" ]
-
-  configs -= [ "//build/config/compiler:chromium_code" ]
-  configs += [ "//build/config/compiler:no_chromium_code" ]
-}