[ObjC ARC] Converts ios/web:web to ARC.

ios/web/test/web_int_test.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/test/web_int_test.h"
 
 #import "base/ios/block_types.h"
 #include "base/memory/ptr_util.h"
 #import "base/test/ios/wait_util.h"
 #import "ios/web/public/test/http_server/http_server.h"
@@ skipping 32 matching lines @@
   GURL expected_url_;
   bool page_loaded_;
 };
 
 #pragma mark - WebIntTest
 
 WebIntTest::WebIntTest() {}
 WebIntTest::~WebIntTest() {}
 
 void WebIntTest::SetUp() {
+  rootPool_ = [[NSAutoreleasePool alloc] init];
   WebTest::SetUp();
 
   // Start the http server.
   web::test::HttpServer& server = web::test::HttpServer::GetSharedInstance();
   ASSERT_FALSE(server.IsRunning());
   server.StartOrDie();
 
   // Remove any previously existing WKWebView data.
   RemoveWKWebViewCreatedData([WKWebsiteDataStore defaultDataStore],
                              [WKWebsiteDataStore allWebsiteDataTypes]);
@@ skipping 14 matching lines @@
 
 void WebIntTest::TearDown() {
   RemoveWKWebViewCreatedData([WKWebsiteDataStore defaultDataStore],
                              [WKWebsiteDataStore allWebsiteDataTypes]);
 
   web::test::HttpServer& server = web::test::HttpServer::GetSharedInstance();
   server.Stop();
   EXPECT_FALSE(server.IsRunning());
 
   WebTest::TearDown();
+  [rootPool_ release];
+  rootPool_ = nil;
 }
 
 id WebIntTest::ExecuteJavaScript(NSString* script) {
   return web::ExecuteJavaScript(web_state()->GetJSInjectionReceiver(), script);
 }
 
 void WebIntTest::ExecuteBlockAndWaitForLoad(const GURL& url,
                                             ProceduralBlock block) {
   DCHECK(block);
   observer_ = base::MakeUnique<IntTestWebStateObserver>(web_state());
@@ skipping 55 matching lines @@
 NSInteger WebIntTest::GetIndexOfNavigationItem(
     const web::NavigationItem* item) {
   for (NSInteger i = 0; i < navigation_manager()->GetItemCount(); ++i) {
     if (navigation_manager()->GetItemAtIndex(i) == item)
       return i;
   }
   return NSNotFound;
 }
 
 }  // namespace web