implement user agent override option.

ios/web/web_state/ui/crw_web_controller_unittest.mm

Index: ios/web/web_state/ui/crw_web_controller_unittest.mm
diff --git a/ios/web/web_state/ui/crw_web_controller_unittest.mm b/ios/web/web_state/ui/crw_web_controller_unittest.mm
index ff3099e6205d0b02fbad49d50a489886f27a80ef..4b34cba3635a9402c0ed83e8aa2da5673a61b779 100644
--- a/ios/web/web_state/ui/crw_web_controller_unittest.mm
+++ b/ios/web/web_state/ui/crw_web_controller_unittest.mm
@@ -641,7 +641,8 @@ void TearDown() override {
 TEST_F(CRWWebControllerTest, WebUrlWithTrustLevel) {
   [web_controller() webStateImpl]->GetNavigationManagerImpl().AddPendingItem(
       GURL("http://chromium.test"), web::Referrer(), ui::PAGE_TRANSITION_TYPED,
-      web::NavigationInitiationType::USER_INITIATED);
+      web::NavigationInitiationType::USER_INITIATED,
+      web::NavigationManager::UserAgentOverrideOption::INHERIT);
 
   [[[mock_web_view_ stub] andReturnBool:NO] hasOnlySecureContent];
   [[[mock_web_view_ stub] andReturn:@""] title];
@@ -678,7 +679,8 @@ void Load(const GURL& URL) {
         [web_controller() webStateImpl]->GetNavigationManagerImpl();
     navigation_manager.AddPendingItem(
         URL, web::Referrer(), ui::PAGE_TRANSITION_TYPED,
-        web::NavigationInitiationType::USER_INITIATED);
+        web::NavigationInitiationType::USER_INITIATED,
+        web::NavigationManager::UserAgentOverrideOption::INHERIT);
     [web_controller() loadCurrentURL];
   }
 
@@ -923,9 +925,10 @@ id ExecuteUserJavaScript(NSString* java_script, NSError** error) {
   // Change last committed URL to app-specific URL.
   web::NavigationManagerImpl& nav_manager =
       [web_controller() webStateImpl]->GetNavigationManagerImpl();
-  nav_manager.AddPendingItem(GURL(kTestAppSpecificURL), web::Referrer(),
-                             ui::PAGE_TRANSITION_TYPED,
-                             web::NavigationInitiationType::USER_INITIATED);
+  nav_manager.AddPendingItem(
+      GURL(kTestAppSpecificURL), web::Referrer(), ui::PAGE_TRANSITION_TYPED,
+      web::NavigationInitiationType::USER_INITIATED,
+      web::NavigationManager::UserAgentOverrideOption::INHERIT);
   [nav_manager.GetSessionController() commitPendingItem];
 
   NSError* error = nil;