[ObjC ARC] Converts the rest of ios/web to ARC.

ios/web/web_state/web_view_internal_creation_util.mm

 // 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.
 
 #import "ios/web/web_state/web_view_internal_creation_util.h"
 
 #include "base/logging.h"
 #include "base/strings/sys_string_conversions.h"
 #include "ios/web/public/web_client.h"
 #import "ios/web/web_state/ui/wk_web_view_configuration_provider.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace web {
 
 namespace {
 
 // Verifies the preconditions for creating a WKWebView. Must be called before
 // a WKWebView is allocated. Not verifying the preconditions before creating
 // a WKWebView will lead to undefined behavior.
 void VerifyWKWebViewCreationPreConditions(
     BrowserState* browser_state,
     WKWebViewConfiguration* configuration) {
@@ skipping 36 matching lines @@
 
 WKWebView* CreateWKWebView(CGRect frame,
                            WKWebViewConfiguration* configuration,
                            BrowserState* browser_state) {
   BOOL use_desktop_user_agent = NO;
   return CreateWKWebView(frame, configuration, browser_state,
                          use_desktop_user_agent);
 }
 
 }  // namespace web