Convert //ios from scoped_ptr to std::unique_ptr.

ios/chrome/browser/passwords/password_controller_unittest.mm

 // Copyright 2016 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.
 
 #import "ios/chrome/browser/passwords/password_controller.h"
 
+#include <memory>
 #include <vector>
 
 #include "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
+#include "base/memory/ptr_util.h"
 #include "components/password_manager/core/browser/log_manager.h"
 #include "components/password_manager/core/browser/password_form_manager.h"
 #include "components/password_manager/core/browser/stub_password_manager_client.h"
 #include "components/password_manager/core/common/password_manager_pref_names.h"
 #include "components/syncable_prefs/testing_pref_service_syncable.h"
 #include "ios/chrome/browser/browser_state/test_chrome_browser_state.h"
 #import "ios/web/public/test/test_web_state.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 using testing::_;
 using testing::Return;
 
 class MockWebState : public web::TestWebState {
  public:
   MOCK_CONST_METHOD0(GetBrowserState, web::BrowserState*(void));
 };
 
 class MockPasswordManagerClient
     : public password_manager::StubPasswordManagerClient {
  public:
   // |form_manager| stays owned by the mock.
   MOCK_METHOD3(PromptUserToSaveOrUpdatePasswordPtr,
                void(password_manager::PasswordFormManager* form_manager,
                     password_manager::CredentialSourceType type,
                     bool update_password));
   MOCK_CONST_METHOD0(GetLogManager, password_manager::LogManager*(void));
 
-  // Workaround for scoped_ptr<> lacking a copy constructor.
+  // Workaround for std::unique_ptr<> lacking a copy constructor.
   bool PromptUserToSaveOrUpdatePassword(
-      scoped_ptr<password_manager::PasswordFormManager> manager,
+      std::unique_ptr<password_manager::PasswordFormManager> manager,
       password_manager::CredentialSourceType type,
       bool update_password) override {
     PromptUserToSaveOrUpdatePasswordPtr(manager.get(), type, update_password);
     return false;
   }
 };
 
 class MockLogManager : public password_manager::LogManager {
  public:
   MOCK_CONST_METHOD1(LogSavePasswordProgress, void(const std::string& text));
   MOCK_CONST_METHOD0(IsLoggingActive, bool(void));
 
   // Methods not important for testing.
   void OnLogRouterAvailabilityChanged(bool router_can_be_used) override {}
   void SetSuspended(bool suspended) override {}
 };
 
 TEST(PasswordControllerTest, SaveOnNonHTMLLandingPage) {
   // Create the PasswordController with a MockPasswordManagerClient.
   TestChromeBrowserState::Builder builder;
   auto pref_service =
-      make_scoped_ptr(new syncable_prefs::TestingPrefServiceSyncable);
+      base::WrapUnique(new syncable_prefs::TestingPrefServiceSyncable);
   pref_service->registry()->RegisterBooleanPref(
       password_manager::prefs::kPasswordManagerSavingEnabled, true);
   builder.SetPrefService(std::move(pref_service));
-  scoped_ptr<TestChromeBrowserState> browser_state(builder.Build());
+  std::unique_ptr<TestChromeBrowserState> browser_state(builder.Build());
   MockWebState web_state;
   ON_CALL(web_state, GetBrowserState())
       .WillByDefault(testing::Return(browser_state.get()));
-  auto client = make_scoped_ptr(new MockPasswordManagerClient);
+  auto client = base::WrapUnique(new MockPasswordManagerClient);
   MockPasswordManagerClient* weak_client = client.get();
   base::scoped_nsobject<PasswordController> passwordController =
       [[PasswordController alloc] initWithWebState:&web_state
                                passwordsUiDelegate:nil
                                             client:std::move(client)];
 
   // Use a mock LogManager to detect that OnPasswordFormsRendered has been
   // called. TODO(crbug.com/598672): this is a hack, we should modularize the
   // code better to allow proper unit-testing.
   MockLogManager log_manager;
   EXPECT_CALL(log_manager, IsLoggingActive()).WillRepeatedly(Return(true));
   EXPECT_CALL(log_manager,
               LogSavePasswordProgress(
                   "Message: \"PasswordManager::OnPasswordFormsRendered\"\n"));
   EXPECT_CALL(log_manager,
               LogSavePasswordProgress(testing::Ne(
                   "Message: \"PasswordManager::OnPasswordFormsRendered\"\n")))
       .Times(testing::AnyNumber());
   EXPECT_CALL(*weak_client, GetLogManager())
       .WillRepeatedly(Return(&log_manager));
 
   web_state.SetContentIsHTML(false);
   web_state.SetCurrentURL(GURL("https://example.com"));
   [passwordController webStateDidLoadPage:&web_state];
 }