Added NavigationContext::IsPost.

ios/web/test/web_int_test.mm

Index: ios/web/test/web_int_test.mm
diff --git a/ios/web/test/web_int_test.mm b/ios/web/test/web_int_test.mm
index e2dd64038a0234d5b93d4415098ca77f41afa008..067e312a9fe56bebaa5cc839f63fa5423c66506d 100644
--- a/ios/web/test/web_int_test.mm
+++ b/ios/web/test/web_int_test.mm
@@ -102,10 +102,16 @@ void WebIntTest::ExecuteBlockAndWaitForLoad(const GURL& url,
 }
 
 void WebIntTest::LoadUrl(const GURL& url) {
-  ExecuteBlockAndWaitForLoad(url, ^{
-    web::NavigationManager::WebLoadParams params(url);
-    params.transition_type = ui::PageTransition::PAGE_TRANSITION_TYPED;
-    navigation_manager()->LoadURLWithParams(params);
+  web::NavigationManager::WebLoadParams params(url);
+  params.transition_type = ui::PageTransition::PAGE_TRANSITION_TYPED;
+  LoadWithParams(params);
+}
+
+void WebIntTest::LoadWithParams(
+    const NavigationManager::WebLoadParams& params) {
+  NavigationManager::WebLoadParams block_params(params);
+  ExecuteBlockAndWaitForLoad(params.url, ^{
+    navigation_manager()->LoadURLWithParams(block_params);
   });
 }