remove dead code in preferences_chromeos_browsertest

Bug: none
Test: still compiles
Change-Id: Ie57ac85850a2dc2fa6985b216a77c339658f472a
Reviewed-on: https://chromium-review.googlesource.com/876492Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Qiang(Joe) Xu <warx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#530657}

chrome/browser/chromeos/preferences_chromeos_browsertest.cc

@@ -5,37 +5,23 @@
 #include <stddef.h>
 #include <sys/types.h>
 
-#include <set>
-#include <string>
-
 #include "base/command_line.h"
-#include "base/compiler_specific.h"
 #include "base/macros.h"
-#include "base/memory/ref_counted.h"
-#include "base/run_loop.h"
-#include "base/values.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chromeos/input_method/input_method_manager_impl.h"
 #include "chrome/browser/chromeos/login/login_manager_test.h"
 #include "chrome/browser/chromeos/login/startup_utils.h"
 #include "chrome/browser/chromeos/login/ui/user_adding_screen.h"
-#include "chrome/browser/chromeos/preferences.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/chromeos/settings/cros_settings.h"
 #include "chrome/browser/chromeos/settings/stub_cros_settings_provider.h"
 #include "chrome/browser/chromeos/system/fake_input_device_settings.h"
-#include "chrome/browser/ui/browser.h"
 #include "chrome/common/pref_names.h"
-#include "chrome/test/base/in_process_browser_test.h"
 #include "chromeos/chromeos_switches.h"
 #include "components/feedback/tracing_manager.h"
 #include "components/prefs/pref_service.h"
-#include "components/prefs/pref_store.h"
-#include "components/prefs/writeable_pref_store.h"
 #include "components/user_manager/user_manager.h"
-#include "content/public/common/service_manager_connection.h"
 #include "content/public/test/test_utils.h"
-#include "services/service_manager/public/cpp/connector.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "ui/base/ime/chromeos/fake_ime_keyboard.h"
 #include "ui/events/event_utils.h"
@@ -141,61 +127,6 @@ class PreferencesTest : public LoginManagerTest {
   DISALLOW_COPY_AND_ASSIGN(PreferencesTest);
 };
 
-class PreferencesServiceBrowserTest : public InProcessBrowserTest {
- public:
-  PreferencesServiceBrowserTest() {}
-
- protected:
-  static service_manager::Connector* connector() {
-    return content::ServiceManagerConnection::GetForProcess()->GetConnector();
-  }
-
-  void WaitForPrefChange(PrefStore* store, const std::string& key) {
-    base::RunLoop run_loop;
-    TestPrefObserver observer(key, run_loop.QuitClosure());
-    store->AddObserver(&observer);
-    run_loop.Run();
-    store->RemoveObserver(&observer);
-  }
-
-  bool GetIntegerPrefValue(PrefStore* store,
-                           const std::string& key,
-                           int* out_value) {
-    const base::Value* value = nullptr;
-    if (!store->GetValue(key, &value))
-      return false;
-    return value->GetAsInteger(out_value);
-  }
-
- private:
-  class TestPrefObserver : public PrefStore::Observer {
-   public:
-    TestPrefObserver(const std::string& pref_name,
-                     const base::Closure& callback)
-        : pref_name_(pref_name), callback_(callback) {}
-
-    ~TestPrefObserver() override {}
-
-    // PrefStore::Observer:
-    void OnPrefValueChanged(const std::string& key) override {
-      if (key == pref_name_)
-        callback_.Run();
-    }
-
-    void OnInitializationCompleted(bool success) override {
-      ASSERT_TRUE(success);
-    }
-
-   private:
-    const std::string pref_name_;
-    const base::Closure callback_;
-
-    DISALLOW_COPY_AND_ASSIGN(TestPrefObserver);
-  };
-
-  DISALLOW_COPY_AND_ASSIGN(PreferencesServiceBrowserTest);
-};
-
 IN_PROC_BROWSER_TEST_F(PreferencesTest, PRE_MultiProfiles) {
   RegisterUser(test_users_[0]);
   RegisterUser(test_users_[1]);