Switch SupportsUserData uses to use unique_ptr.

ios/web/web_state/ui/wk_web_view_configuration_provider.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.
 
 #import "ios/web/web_state/ui/wk_web_view_configuration_provider.h"
 
 #import <Foundation/Foundation.h>
 #import <WebKit/WebKit.h>
 
 #import "base/ios/weak_nsobject.h"
 #include "base/logging.h"
+#include "base/memory/ptr_util.h"
 #include "ios/web/public/browser_state.h"
 #import "ios/web/web_state/js/page_script_util.h"
 #import "ios/web/web_state/ui/crw_wk_script_message_router.h"
 
 namespace web {
 
 namespace {
 // A key used to associate a WKWebViewConfigurationProvider with a BrowserState.
 const char kWKWebViewConfigProviderKeyName[] = "wk_web_view_config_provider";
 
 // Returns an autoreleased instance of WKUserScript to be added to
 // configuration's userContentController.
 WKUserScript* InternalGetEarlyPageScript(BrowserState* browser_state) {
   return [[[WKUserScript alloc]
         initWithSource:GetEarlyPageScript(browser_state)
          injectionTime:WKUserScriptInjectionTimeAtDocumentStart
       forMainFrameOnly:YES] autorelease];
 }
 
 }  // namespace
 
 // static
 WKWebViewConfigurationProvider&
 WKWebViewConfigurationProvider::FromBrowserState(BrowserState* browser_state) {
   DCHECK([NSThread isMainThread]);
   DCHECK(browser_state);
   if (!browser_state->GetUserData(kWKWebViewConfigProviderKeyName)) {
     browser_state->SetUserData(
         kWKWebViewConfigProviderKeyName,
-        new WKWebViewConfigurationProvider(browser_state));
+        base::WrapUnique(new WKWebViewConfigurationProvider(browser_state)));
   }
   return *(static_cast<WKWebViewConfigurationProvider*>(
       browser_state->GetUserData(kWKWebViewConfigProviderKeyName)));
 }
 
 WKWebViewConfigurationProvider::WKWebViewConfigurationProvider(
     BrowserState* browser_state)
     : browser_state_(browser_state) {}
 
 WKWebViewConfigurationProvider::~WKWebViewConfigurationProvider() {
@@ skipping 42 matching lines @@
   configuration_.reset();
   router_.reset();
   // Make sure that no one retains configuration, router, processPool.
   DCHECK(!weak_configuration);
   DCHECK(!weak_router);
   // TODO(crbug.com/522672): Enable this DCHECK.
   // DCHECK(!weak_process_pool);
 }
 
 }  // namespace web