Cleanup ios_web_view integration tests.

ios/web_view/test/chrome_web_view_restorable_state_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.
 
 #import <ChromeWebView/ChromeWebView.h>
 
 #import "ios/web_view/test/chrome_web_view_test.h"
+#import "ios/web_view/test/web_view_test_util.h"
 #include "testing/gtest_mac.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
 #error "This file requires ARC support."
 #endif
 
+namespace ios_web_view {
+
 namespace {
 
-// Creates web view for testing.
-CWVWebView* CreateWebView() {
-  return [[CWVWebView alloc]
-      initWithFrame:CGRectMake(0, 0, 50, 50)
-      configuration:[CWVWebViewConfiguration defaultConfiguration]];
-}
-
 // Creates a new web view and restores its state from |source_web_view|.
 CWVWebView* CreateWebViewWithState(CWVWebView* source_web_view) {
   NSMutableData* data = [[NSMutableData alloc] init];
   NSKeyedArchiver* archiver =
       [[NSKeyedArchiver alloc] initForWritingWithMutableData:data];
   [source_web_view encodeRestorableStateWithCoder:archiver];
   [archiver finishEncoding];
   NSKeyedUnarchiver* unarchiver =
       [[NSKeyedUnarchiver alloc] initForReadingWithData:data];
-  CWVWebView* result = CreateWebView();
+  CWVWebView* result = test::CreateWebView();
   [result decodeRestorableStateWithCoder:unarchiver];
   return result;
 }
 
 }  // namespace
 
-namespace ios_web_view {
-
 // Tests encodeRestorableStateWithCoder: and decodeRestorableStateWithCoder:
 // methods.
 typedef ios_web_view::ChromeWebViewTest ChromeWebViewRestorableStateTest;
 TEST_F(ChromeWebViewRestorableStateTest, EncodeDecode) {
-  // Create web view that will be used as a source for state restoration.
-  CWVWebView* web_view = CreateWebView();
-
   // Load 2 URLs to create non-default state.
-  ASSERT_FALSE(web_view.lastCommittedURL);
-  ASSERT_FALSE(web_view.visibleURL);
-  ASSERT_FALSE(web_view.canGoBack);
-  ASSERT_FALSE(web_view.canGoForward);
-  LoadUrl(web_view, [NSURL URLWithString:@"about:newtab"]);
-  ASSERT_NSEQ(@"about:newtab", web_view.lastCommittedURL.absoluteString);
-  ASSERT_NSEQ(@"about:newtab", web_view.visibleURL.absoluteString);
-  LoadUrl(web_view, [NSURL URLWithString:@"about:blank"]);
-  ASSERT_NSEQ(@"about:blank", web_view.lastCommittedURL.absoluteString);
-  ASSERT_NSEQ(@"about:blank", web_view.visibleURL.absoluteString);
-  ASSERT_TRUE(web_view.canGoBack);
-  ASSERT_FALSE(web_view.canGoForward);
+  ASSERT_FALSE([web_view_ lastCommittedURL]);
+  ASSERT_FALSE([web_view_ visibleURL]);
+  ASSERT_FALSE([web_view_ canGoBack]);
+  ASSERT_FALSE([web_view_ canGoForward]);
+  LoadUrl(web_view_, [NSURL URLWithString:@"about:newtab"]);
+  ASSERT_NSEQ(@"about:newtab", [web_view_ lastCommittedURL].absoluteString);
+  ASSERT_NSEQ(@"about:newtab", [web_view_ visibleURL].absoluteString);
+  LoadUrl(web_view_, [NSURL URLWithString:@"about:blank"]);
+  ASSERT_NSEQ(@"about:blank", [web_view_ lastCommittedURL].absoluteString);
+  ASSERT_NSEQ(@"about:blank", [web_view_ visibleURL].absoluteString);
+  ASSERT_TRUE([web_view_ canGoBack]);
+  ASSERT_FALSE([web_view_ canGoForward]);
 
   // Create second web view and restore its state from the first web view.
-  CWVWebView* restored_web_view = CreateWebViewWithState(web_view);
+  CWVWebView* restored_web_view = CreateWebViewWithState(web_view_);
 
   // Verify that the state has been restored correctly.
   EXPECT_NSEQ(@"about:blank",
-              restored_web_view.lastCommittedURL.absoluteString);
-  EXPECT_NSEQ(@"about:blank", restored_web_view.visibleURL.absoluteString);
-  EXPECT_TRUE(web_view.canGoBack);
-  EXPECT_FALSE(web_view.canGoForward);
+              [restored_web_view lastCommittedURL].absoluteString);
+  EXPECT_NSEQ(@"about:blank", [restored_web_view visibleURL].absoluteString);
+  EXPECT_TRUE([web_view_ canGoBack]);
+  EXPECT_FALSE([web_view_ canGoForward]);
 }
 
 }  // namespace ios_web_view