add jumbo support when building gn itself

Change-Id: Ia9af79c05b910e2fa345825d225ff6cfc3a1ec78
Reviewed-on: https://chromium-review.googlesource.com/791590Reviewed-by: Dirk Pranke <dpranke@chromium.org>
Commit-Queue: Mostyn Bramley-Moore <mostynb@vewd.com>
Cr-Commit-Position: refs/heads/master@{#519597}

tools/gn/BUILD.gn

@@ -2,12 +2,13 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/jumbo.gni")
 import("//testing/test.gni")
 import("//testing/libfuzzer/fuzzer_test.gni")
 
 defines = [ "GN_BUILD" ]
 
-static_library("gn_lib") {
+jumbo_static_library("gn_lib") {
   configs += [ "//build/config:precompiled_headers" ]
 
   sources = [
@@ -276,6 +277,18 @@ executable("gn") {
 }
 
 test("gn_unittests") {
+  deps = [
+    ":gn_unittests_sources",
+  ]
+
+  data = [
+    "format_test_data/",
+  ]
+}
+
+jumbo_source_set("gn_unittests_sources") {
+  testonly = true
+
   sources = [
     "action_target_generator_unittest.cc",
     "analyzer_unittest.cc",
@@ -342,11 +355,7 @@ test("gn_unittests") {
     "xml_element_writer_unittest.cc",
   ]
 
-  data = [
-    "format_test_data/",
-  ]
-
-  deps = [
+  public_deps = [
     ":gn_lib",
     "//base/test:run_all_unittests",
     "//base/test:test_support",

tools/gn/analyzer_unittest.cc

@@ -10,7 +10,7 @@
 #include "tools/gn/settings.h"
 #include "tools/gn/source_file.h"
 
-namespace {
+namespace gn_analyzer_unittest {
 
 class MockLoader : public Loader {
  public:
@@ -111,8 +111,6 @@ class AnalyzerTest : public testing::Test {
   std::string tc_name_;
 };
 
-}  // namespace
-
 TEST_F(AnalyzerTest, AllWasPruned) {
   RunBasicTest(
       R"({
@@ -231,3 +229,5 @@ TEST_F(AnalyzerTest, BuildFilesWereModifiedAndCompilingAll) {
       R"("test_targets":["//:a"])"
       "}");
 }
+
+}  // namespace gn_analyzer_unittest

tools/gn/builder_unittest.cc

@@ -10,7 +10,7 @@
 #include "tools/gn/test_with_scope.h"
 #include "tools/gn/toolchain.h"
 
-namespace {
+namespace gn_builder_unittest {
 
 class MockLoader : public Loader {
  public:
@@ -89,8 +89,6 @@ class BuilderTest : public testing::Test {
   Scope scope_;
 };
 
-}  // namespace
-
 TEST_F(BuilderTest, BasicDeps) {
   SourceDir toolchain_dir = settings_.toolchain_label().dir();
   std::string toolchain_name = settings_.toolchain_label().name();
@@ -246,3 +244,5 @@ TEST_F(BuilderTest, ConfigLoad) {
   // Should have requested that B is loaded.
   EXPECT_TRUE(loader_->HasLoadedOne(SourceFile("//b/BUILD.gn")));
 }
+
+}  // namespace gn_builder_unittest