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 0b0a95396ed4f321140da5c8882ea00c78fd6a56..f158dbcc40fb58a18191d134faa0b39786d2807d 100644
--- a/content/test/test_render_frame_host.cc
+++ b/content/test/test_render_frame_host.cc
@@ -346,7 +346,7 @@ 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;