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

ios/chrome/browser/signin/gaia_auth_fetcher_ios_unittest.mm

 // Copyright 2015 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 "ios/chrome/browser/signin/gaia_auth_fetcher_ios.h"
 
+#include <memory>
+
 #import "base/mac/scoped_nsobject.h"
-#include "base/memory/scoped_ptr.h"
 #include "base/run_loop.h"
 #include "google_apis/gaia/gaia_urls.h"
 #include "ios/chrome/browser/signin/gaia_auth_fetcher_ios_private.h"
 #include "ios/web/public/test/test_browser_state.h"
 #include "ios/web/public/test/test_web_thread_bundle.h"
 #include "net/url_request/test_url_fetcher_factory.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #import "testing/gtest_mac.h"
 #include "testing/platform_test.h"
@@ skipping 51 matching lines @@
   GaiaAuthFetcherIOSBridge* GetBridge() {
     return gaia_auth_fetcher_->bridge_.get();
   }
 
   id GetMockWKWebView() { return gaia_auth_fetcher_->bridge_->GetWKWebView(); }
 
   web::TestWebThreadBundle thread_bundle_;
   // BrowserState, required for WKWebView creation.
   web::TestBrowserState browser_state_;
   MockGaiaConsumer consumer_;
-  scoped_ptr<GaiaAuthFetcherIOS> gaia_auth_fetcher_;
+  std::unique_ptr<GaiaAuthFetcherIOS> gaia_auth_fetcher_;
 };
 
 // Tests that the cancel mechanism works properly by cancelling an OAuthLogin
 // request and controlling that the consumer is properly called.
 TEST_F(GaiaAuthFetcherIOSTest, StartOAuthLoginCancelled) {
   GoogleServiceAuthError expected_error =
       GoogleServiceAuthError(GoogleServiceAuthError::REQUEST_CANCELED);
   EXPECT_CALL(consumer_, OnClientLoginFailure(expected_error)).Times(1);
 
   [static_cast<WKWebView*>([GetMockWKWebView() expect])
@@ skipping 36 matching lines @@
 }
 
 // Tests that requests that do not require cookies are using the original
 // GaiaAuthFetcher and not the GaiaAuthFetcherIOS specialization.
 TEST_F(GaiaAuthFetcherIOSTest, StartGetCheckConnectionInfo) {
   std::string data(
       "[{\"carryBackToken\": \"token1\", \"url\": \"http://www.google.com\"}]");
   EXPECT_CALL(consumer_, OnGetCheckConnectionInfoSuccess(data)).Times(1);
 
   // Set up the fake URL Fetcher.
-  scoped_ptr<net::FakeURLFetcherFactory> fake_url_fetcher_factory(
+  std::unique_ptr<net::FakeURLFetcherFactory> fake_url_fetcher_factory(
       new net::FakeURLFetcherFactory(new net::URLFetcherImplFactory()));
   fake_url_fetcher_factory->SetFakeResponse(
       GaiaUrls::GetInstance()->GetCheckConnectionInfoURLWithSource(
           std::string()),
       data, net::HTTP_OK, net::URLRequestStatus::SUCCESS);
 
   gaia_auth_fetcher_->StartGetCheckConnectionInfo();
   base::RunLoop().RunUntilIdle();
 }
 
@@ skipping 34 matching lines @@
   [[GetMockWKWebView() expect] setNavigationDelegate:[OCMArg isNotNil]];
   [static_cast<WKWebView*>([[GetMockWKWebView() expect] andDo:^(NSInvocation*) {
     GetBridge()->URLFetchSuccess("data");
   }]) loadRequest:[OCMArg any]];
 
   gaia_auth_fetcher_->StartMergeSession("uber_token", "");
   web::BrowserState::GetActiveStateManager(&browser_state_)->SetActive(false);
   web::BrowserState::GetActiveStateManager(&browser_state_)->SetActive(true);
   EXPECT_OCMOCK_VERIFY(GetMockWKWebView());
 }