Remove auto raw pointer deduction from non-linux specific code.

ios/chrome/browser/web/blocked_popup_tab_helper_unittest.mm

 // Copyright 2017 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/web/blocked_popup_tab_helper.h"
 
 #include "base/memory/ptr_util.h"
 #include "components/content_settings/core/browser/host_content_settings_map.h"
 #include "components/infobars/core/confirm_infobar_delegate.h"
 #include "components/infobars/core/infobar.h"
@@ skipping 76 matching lines @@
   web::Referrer referrer(source_url, web::ReferrerPolicyDefault);
   __block bool show_popup_handler_was_called = false;
   web::BlockedPopupInfo popup_info(target_url, referrer, nil, ^{
     show_popup_handler_was_called = true;
   });
   GetBlockedPopupTabHelper()->HandlePopup(popup_info);
 
   // Allow blocked popup.
   ASSERT_EQ(1U, GetInfobarManager()->infobar_count());
   infobars::InfoBar* infobar = GetInfobarManager()->infobar_at(0);
-  auto delegate = infobar->delegate()->AsConfirmInfoBarDelegate();
+  auto* delegate = infobar->delegate()->AsConfirmInfoBarDelegate();
   ASSERT_TRUE(delegate);
   delegate->Accept();
 
   // Verify that handler was called and popups are allowed for |test_url|.
   EXPECT_TRUE(show_popup_handler_was_called);
   EXPECT_FALSE(GetBlockedPopupTabHelper()->ShouldBlockPopup(source_url));
 }
 
 // Tests that an infobar is added to the infobar manager when
 // BlockedPopupTabHelper::HandlePopup() is called.
 TEST_F(BlockedPopupTabHelperTest, ShowAndDismissInfoBar) {
   const GURL test_url("https://popups.example.com");
   web::BlockedPopupInfo popup_info(test_url, web::Referrer(), nil, nil);
 
   // Check that there are no infobars showing and no registered observers.
   EXPECT_EQ(0U, GetInfobarManager()->infobar_count());
   EXPECT_FALSE(IsObservingSources());
 
   // Call |HandlePopup| to show an infobar.
   GetBlockedPopupTabHelper()->HandlePopup(popup_info);
   ASSERT_EQ(1U, GetInfobarManager()->infobar_count());
   EXPECT_TRUE(IsObservingSources());
 
   // Dismiss the infobar and check that the tab helper no longer has any
   // registered observers.
   GetInfobarManager()->infobar_at(0)->RemoveSelf();
   EXPECT_EQ(0U, GetInfobarManager()->infobar_count());
   EXPECT_FALSE(IsObservingSources());
 }