[ObjC ARC] Converts ios/web/public/test/fakes:fakes to ARC.

ios/web/public/test/fakes/test_web_state.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/public/test/fakes/test_web_state.h"
 
 #include <stdint.h>
 
 #include "base/callback.h"
 #import "ios/web/public/web_state/ui/crw_content_view.h"
 #include "ios/web/public/web_state/web_state_observer.h"
 
+#if !defined(__has_feature) || !__has_feature(objc_arc)
+#error "This file requires ARC support."
+#endif
+
 namespace web {
 
 void TestWebState::AddObserver(WebStateObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void TestWebState::RemoveObserver(WebStateObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
@@ skipping 29 matching lines @@
   web_usage_enabled_ = enabled;
 }
 
 bool TestWebState::ShouldSuppressDialogs() const {
   return false;
 }
 
 void TestWebState::SetShouldSuppressDialogs(bool should_suppress) {}
 
 UIView* TestWebState::GetView() {
-  return view_.get();
+  return view_;
 }
 
 const NavigationManager* TestWebState::GetNavigationManager() const {
   return navigation_manager_.get();
 }
 
 NavigationManager* TestWebState::GetNavigationManager() {
   return navigation_manager_.get();
 }
 
@@ skipping 10 matching lines @@
 CRWSessionStorage* TestWebState::BuildSessionStorage() {
   return nil;
 }
 
 void TestWebState::SetNavigationManager(
     std::unique_ptr<NavigationManager> navigation_manager) {
   navigation_manager_ = std::move(navigation_manager);
 }
 
 void TestWebState::SetView(UIView* view) {
-  view_.reset([view retain]);
+  view_ = view;
 }
 
 CRWJSInjectionReceiver* TestWebState::GetJSInjectionReceiver() const {
   return nullptr;
 }
 
 void TestWebState::ExecuteJavaScript(const base::string16& javascript) {}
 
 void TestWebState::ExecuteJavaScript(const base::string16& javascript,
                                      const JavaScriptResultCallback& callback) {
@@ skipping 83 matching lines @@
     observer.DidStartNavigation(navigation_context);
 }
 
 void TestWebState::OnRenderProcessGone() {
   for (auto& observer : observers_)
     observer.RenderProcessGone();
 }
 
 void TestWebState::ShowTransientContentView(CRWContentView* content_view) {
   if (content_view) {
-    transient_content_view_.reset([content_view retain]);
+    transient_content_view_ = content_view;
   }
 }
 
 void TestWebState::ClearTransientContentView() {
-  transient_content_view_.reset();
+  transient_content_view_ = nil;
 }
 
 CRWContentView* TestWebState::GetTransientContentView() {
-  return transient_content_view_.get();
+  return transient_content_view_;
 }
 
 void TestWebState::SetCurrentURL(const GURL& url) {
   url_ = url;
 }
 
 void TestWebState::SetTrustLevel(URLVerificationTrustLevel trust_level) {
   trust_level_ = trust_level;
 }
 
 CRWWebViewProxyType TestWebState::GetWebViewProxy() const {
   return nullptr;
 }
 
 WebStateInterfaceProvider* TestWebState::GetWebStateInterfaceProvider() {
   return nullptr;
 }
 
 bool TestWebState::HasOpener() const {
   return false;
 }
 
 base::WeakPtr<WebState> TestWebState::AsWeakPtr() {
   NOTREACHED();
   return base::WeakPtr<WebState>();
 }
 
 }  // namespace web