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

ios/web/web_state/http_auth_inttest.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.
 
 #include "base/memory/ptr_util.h"
 #include "base/strings/sys_string_conversions.h"
 #include "base/test/ios/wait_util.h"
 #import "ios/web/public/navigation_manager.h"
 #import "ios/web/public/test/http_server.h"
 #include "ios/web/public/test/http_server_util.h"
@@ skipping 20 matching lines @@
   // Loads a page with URL and waits for OnAuthRequired callback.
   void LoadUrlWithAuthChallenge(const GURL& url) {
     NavigationManager::WebLoadParams params(url);
     navigation_manager()->LoadURLWithParams(params);
     WaitForOnAuthRequiredCallback();
   }
 
   // Authenticates and waits until the page finishes loading.
   void Authenticate(NSString* username, NSString* password) {
     ASSERT_TRUE(web_state()->IsLoading());
-    auto auth_request = web_state_delegate_.last_authentication_request();
+    auto* auth_request = web_state_delegate_.last_authentication_request();
     auth_request->auth_callback.Run(username, password);
     base::test::ios::WaitUntilCondition(^bool {
       return !web_state()->IsLoading();
     });
   }
 };
 
 // Tests successful basic authentication.
 TEST_F(HttpAuthTest, SuccessfullBasicAuth) {
   // Load the page which requests basic HTTP authentication.
   GURL url = HttpServer::MakeUrl("http://good-auth");
   test::SetUpHttpServer(base::MakeUnique<HttpAuthResponseProvider>(
       url, "GoodRealm", "gooduser", "goodpass"));
   LoadUrlWithAuthChallenge(url);
 
   // Verify that callback receives correct WebState.
-  auto auth_request = web_state_delegate_.last_authentication_request();
+  auto* auth_request = web_state_delegate_.last_authentication_request();
   EXPECT_EQ(web_state(), auth_request->web_state);
 
   // Verify that callback receives correctly configured protection space.
   NSURLProtectionSpace* protection_space = auth_request->protection_space;
   EXPECT_NSEQ(@"GoodRealm", protection_space.realm);
   EXPECT_FALSE(protection_space.receivesCredentialSecurely);
   EXPECT_FALSE([protection_space isProxy]);
   EXPECT_EQ(url.host(), base::SysNSStringToUTF8(protection_space.host));
   EXPECT_EQ(
       base::checked_cast<uint16_t>(HttpServer::GetSharedInstance().GetPort()),
@@ skipping 12 matching lines @@
 
 // Tests unsuccessful basic authentication.
 TEST_F(HttpAuthTest, UnsucessfulBasicAuth) {
   // Load the page which requests basic HTTP authentication.
   GURL url = HttpServer::MakeUrl("http://bad-auth");
   test::SetUpHttpServer(base::MakeUnique<HttpAuthResponseProvider>(
       url, "BadRealm", "baduser", "badpass"));
   LoadUrlWithAuthChallenge(url);
 
   // Make sure that incorrect credentials request authentication again.
-  auto auth_request = web_state_delegate_.last_authentication_request();
+  auto* auth_request = web_state_delegate_.last_authentication_request();
   auth_request->auth_callback.Run(@"gooduser", @"goodpass");
   WaitForOnAuthRequiredCallback();
 
   // Verify that callback receives correct WebState.
   auth_request = web_state_delegate_.last_authentication_request();
   EXPECT_EQ(web_state(), auth_request->web_state);
 
   // Verify that callback receives correctly configured protection space.
   NSURLProtectionSpace* protection_space = auth_request->protection_space;
   EXPECT_NSEQ(@"BadRealm", protection_space.realm);
@@ skipping 10 matching lines @@
 
   // Cancel authentication and make sure that the page is blank.
   auth_request->auth_callback.Run(nil, nil);
   base::test::ios::WaitUntilCondition(^bool {
     return !web_state()->IsLoading();
   });
   EXPECT_FALSE(ExecuteJavaScript(@"window.document"));
 }
 
 }  // web