PlzNavigate: inform the renderer that a navigation is a POST

content/test/test_render_frame_host.cc

Index: content/test/test_render_frame_host.cc
diff --git a/content/test/test_render_frame_host.cc b/content/test/test_render_frame_host.cc
index a842757abb745a2b3878aed7bd1c4ab1a959409b..91c0116c6b7ec12f9d9205004731f057aae19c10 100644
--- a/content/test/test_render_frame_host.cc
+++ b/content/test/test_render_frame_host.cc
@@ -344,7 +344,7 @@ void TestRenderFrameHost::SendRendererInitiatedNavigationRequest(
   InitializeRenderFrameIfNeeded();
 
   if (IsBrowserSideNavigationEnabled()) {
-    BeginNavigationParams begin_params("GET", std::string(), net::LOAD_NORMAL,
+    BeginNavigationParams begin_params(std::string(), net::LOAD_NORMAL,
                                        has_user_gesture, false,
                                        REQUEST_CONTEXT_TYPE_HYPERLINK);
     CommonNavigationParams common_params;