Prevent ScopedTempDir cleanup issues in ProfileSigninConfirmationHelperTest

Bug: 546640
Change-Id: I524066ce81a422938eca2c80523b60c4f9f670c4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1929094Reviewed-by: Mikel Astiz <mastiz@chromium.org>
Commit-Queue: Oliver Li <olivierli@chromium.org>
Cr-Commit-Position: refs/heads/master@{#717695}

chrome/browser/ui/sync/profile_signin_confirmation_helper_unittest.cc

@@ -11,6 +11,7 @@
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
+#include "base/files/scoped_temp_dir.h"
 #include "base/memory/ptr_util.h"
 #include "base/run_loop.h"
 #include "base/stl_util.h"
@@ -131,8 +132,11 @@ class ProfileSigninConfirmationHelperTest : public testing::Test {
   }
 
   void SetUp() override {
+    ASSERT_TRUE(profile_dir_.CreateUniqueTempDir());
+
     // Create the profile.
     TestingProfile::Builder builder;
+    builder.SetPath(profile_dir_.GetPath());
     user_prefs_ = new TestingPrefStoreWithCustomReadError;
     sync_preferences::TestingPrefServiceSyncable* pref_service =
         new sync_preferences::TestingPrefServiceSyncable(
@@ -168,6 +172,7 @@ class ProfileSigninConfirmationHelperTest : public testing::Test {
   }
 
  protected:
+  base::ScopedTempDir profile_dir_;
   content::BrowserTaskEnvironment task_environment_;
   std::unique_ptr<TestingProfile> profile_;
   TestingPrefStoreWithCustomReadError* user_prefs_;