Using ResourceRequestBody as the type of HTTP body outside of //content.

chrome/browser/ui/browser_navigator.cc

Index: chrome/browser/ui/browser_navigator.cc
diff --git a/chrome/browser/ui/browser_navigator.cc b/chrome/browser/ui/browser_navigator.cc
index d98c47eb6400c7f15db6e60d639e4f8638f0adaf..dfcaa8d44d56b9887b271dfa1a3bef3b475bef1c 100644
--- a/chrome/browser/ui/browser_navigator.cc
+++ b/chrome/browser/ui/browser_navigator.cc
@@ -264,13 +264,11 @@ void LoadURLInContents(WebContents* target_contents,
       params->should_replace_current_entry;
   load_url_params.is_renderer_initiated = params->is_renderer_initiated;
 
-  // Only allows the browser-initiated navigation to use POST.
-  if (params->uses_post && !params->is_renderer_initiated) {
-    load_url_params.load_type =
-        NavigationController::LOAD_TYPE_BROWSER_INITIATED_HTTP_POST;
-    load_url_params.browser_initiated_post_data =
-        params->browser_initiated_post_data;
+  if (params->uses_post) {
+    load_url_params.load_type = NavigationController::LOAD_TYPE_HTTP_POST;
+    load_url_params.post_data = params->post_data;
   }
+
   target_contents->GetController().LoadURLWithParams(load_url_params);
 }