Use InstallDetails in setup.

chrome/installer/setup/install_worker_unittest.cc

Index: chrome/installer/setup/install_worker_unittest.cc
diff --git a/chrome/installer/setup/install_worker_unittest.cc b/chrome/installer/setup/install_worker_unittest.cc
index 46d432a0bf0742b34345a1f5752017366bda332e..53f836356d0ef43e8ec030f4c00f2be0685a2b1e 100644
--- a/chrome/installer/setup/install_worker_unittest.cc
+++ b/chrome/installer/setup/install_worker_unittest.cc
@@ -4,12 +4,19 @@
 
 #include "chrome/installer/setup/install_worker.h"
 
+#include <memory>
+#include <utility>
 #include <vector>
 
+#include "base/bind.h"
+#include "base/callback_helpers.h"
 #include "base/macros.h"
+#include "base/memory/ptr_util.h"
 #include "base/version.h"
 #include "base/win/registry.h"
 #include "chrome/common/chrome_constants.h"
+#include "chrome/install_static/install_details.h"
+#include "chrome/install_static/install_modes.h"
 #include "chrome/installer/setup/setup_util.h"
 #include "chrome/installer/util/create_reg_key_work_item.h"
 #include "chrome/installer/util/delete_reg_key_work_item.h"
@@ -484,6 +491,14 @@ TEST_F(InstallWorkerTest, TestInstallChromeSingleSystem) {
   EXPECT_CALL(work_item_list, AddDeleteRegKeyWorkItem(_, _, _))
       .WillRepeatedly(Return(delete_reg_key_work_item.get()));
 
+  // Install a basic InstallDetails instance and clean it up at the end.
+  std::unique_ptr<install_static::PrimaryInstallDetails> install_details(
+      base::MakeUnique<install_static::PrimaryInstallDetails>());
+  install_details->set_mode(&install_static::kInstallModes[0]);
+  install_static::InstallDetails::SetForProcess(std::move(install_details));
+  base::ScopedClosureRunner install_details_resetter(base::Bind(
+      []() { install_static::InstallDetails::SetForProcess(nullptr); }));
+
   AddInstallWorkItems(*installation_state.get(),
                       *installer_state.get(),
                       setup_path_,