Delete unused password_bubble_experiment_unittest.cc

chrome/browser/ui/passwords/password_bubble_experiment_unittest.cc

-// 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.
-
-#include "components/password_manager/core/browser/password_bubble_experiment.h"
-
-#include "base/files/scoped_temp_dir.h"
-#include "base/metrics/field_trial.h"
-#include "chrome/test/base/testing_profile.h"
-#include "components/variations/entropy_provider.h"
-#include "components/variations/variations_associated_data.h"
-#include "content/public/test/test_browser_thread_bundle.h"
-#include "testing/gtest/include/gtest/gtest.h"
-
-class PasswordBubbleExperimentTest : public testing::Test {
- public:
-  void SetUp() override {
-    ASSERT_TRUE(temp_dir_.CreateUniqueTempDir());
-    profile_.reset(new TestingProfile(temp_dir_.path()));
-
-    field_trial_list_.reset(new base::FieldTrialList(
-        new metrics::SHA1EntropyProvider("foo")));
-  }
-
-  void TearDown() override {
-    variations::testing::ClearAllVariationParams();
-  }
-
-  PrefService* prefs() { return profile_->GetPrefs(); }
-
- private:
-  content::TestBrowserThreadBundle thread_bundle_;
-  base::ScopedTempDir temp_dir_;
-  std::unique_ptr<TestingProfile> profile_;
-  std::unique_ptr<base::FieldTrialList> field_trial_list_;
-};
-
-// TODO(vasilii): add tests once there is a smart bubble.