Convert //extensions/{common,shell} from scoped_ptr to std::unique_ptr

extensions/shell/browser/shell_prefs_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 "extensions/shell/browser/shell_prefs.h"
 
 #include "base/macros.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "components/prefs/pref_service.h"
@@ skipping 27 matching lines @@
  public:
   ShellPrefsTest() {}
   ~ShellPrefsTest() override {}
 
  protected:
   content::TestBrowserThreadBundle thread_bundle_;
   PrefsTestBrowserContext browser_context_;
 };
 
 TEST_F(ShellPrefsTest, CreateLocalState) {
-  scoped_ptr<PrefService> local_state =
+  std::unique_ptr<PrefService> local_state =
       shell_prefs::CreateLocalState(browser_context_.GetPath());
   ASSERT_TRUE(local_state);
 
 #if defined(OS_CHROMEOS)
   // Verify prefs were registered.
   EXPECT_TRUE(local_state->FindPreference("hardware.audio_output_enabled"));
 
   // Verify the test values were read.
   EXPECT_FALSE(local_state->GetBoolean("hardware.audio_output_enabled"));
 #endif
 }
 
 TEST_F(ShellPrefsTest, CreateUserPrefService) {
   // Create the pref service. This loads the test pref file.
-  scoped_ptr<PrefService> service =
+  std::unique_ptr<PrefService> service =
       shell_prefs::CreateUserPrefService(&browser_context_);
 
   // Some basic extension preferences are registered.
   EXPECT_TRUE(service->FindPreference("extensions.settings"));
   EXPECT_TRUE(service->FindPreference("extensions.toolbarsize"));
   EXPECT_FALSE(service->FindPreference("should.not.exist"));
 
   // User prefs from the file have been read correctly.
   EXPECT_EQ("1.2.3.4", service->GetString("extensions.last_chrome_version"));
   EXPECT_EQ(123, service->GetInteger("extensions.toolbarsize"));
 
   // The user prefs system has been initialized.
   EXPECT_EQ(service.get(), user_prefs::UserPrefs::Get(&browser_context_));
 }
 
 }  // namespace
 }  // namespace extensions