PlzNavigate: Enforce 'form-action' CSP on the browser-side.

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 6558a129032199dc9ab0101ae138eb3b566d3fea..67ec079eb2fd096f07d7dc505c107baecfb162c3 100644
--- a/content/test/test_render_frame_host.cc
+++ b/content/test/test_render_frame_host.cc
@@ -424,7 +424,9 @@ void TestRenderFrameHost::SendRendererInitiatedNavigationRequest(
     BeginNavigationParams begin_params(
         std::string(), net::LOAD_NORMAL, has_user_gesture, false,
         REQUEST_CONTEXT_TYPE_HYPERLINK,
-        blink::WebMixedContentContextType::Blockable, url::Origin());
+        blink::WebMixedContentContextType::Blockable,
+        false,  // is_form_submission
+        url::Origin());
     CommonNavigationParams common_params;
     common_params.url = url;
     common_params.referrer = Referrer(GURL(), blink::WebReferrerPolicyDefault);