Revert of PlzNavigate: inform the WebFrameClient that a form will be submitted

content/renderer/render_frame_impl.cc

Index: content/renderer/render_frame_impl.cc
diff --git a/content/renderer/render_frame_impl.cc b/content/renderer/render_frame_impl.cc
index b8ddba89ee0edaa8e336a036e21983138060726f..e67fa1846569b41b3e8f4cd501093268215a0e7f 100644
--- a/content/renderer/render_frame_impl.cc
+++ b/content/renderer/render_frame_impl.cc
@@ -2878,29 +2878,23 @@
 }
 
 void RenderFrameImpl::willSubmitForm(const blink::WebFormElement& form) {
-  // With PlzNavigate-enabled, this will be called before a DataSource has been
-  // set-up.
-  // TODO(clamy): make sure the internal state is properly updated at some
-  // point in the navigation.
-  if (!IsBrowserSideNavigationEnabled()) {
-    DocumentState* document_state =
-        DocumentState::FromDataSource(frame_->provisionalDataSource());
-    NavigationStateImpl* navigation_state =
-        static_cast<NavigationStateImpl*>(document_state->navigation_state());
-    InternalDocumentStateData* internal_data =
-        InternalDocumentStateData::FromDocumentState(document_state);
-
-    if (ui::PageTransitionCoreTypeIs(navigation_state->GetTransitionType(),
-                                     ui::PAGE_TRANSITION_LINK)) {
-      navigation_state->set_transition_type(ui::PAGE_TRANSITION_FORM_SUBMIT);
-    }
-
-    // Save these to be processed when the ensuing navigation is committed.
-    WebSearchableFormData web_searchable_form_data(form);
-    internal_data->set_searchable_form_url(web_searchable_form_data.url());
-    internal_data->set_searchable_form_encoding(
-        web_searchable_form_data.encoding().utf8());
-  }
+  DocumentState* document_state =
+      DocumentState::FromDataSource(frame_->provisionalDataSource());
+  NavigationStateImpl* navigation_state =
+      static_cast<NavigationStateImpl*>(document_state->navigation_state());
+  InternalDocumentStateData* internal_data =
+      InternalDocumentStateData::FromDocumentState(document_state);
+
+  if (ui::PageTransitionCoreTypeIs(navigation_state->GetTransitionType(),
+                                   ui::PAGE_TRANSITION_LINK)) {
+    navigation_state->set_transition_type(ui::PAGE_TRANSITION_FORM_SUBMIT);
+  }
+
+  // Save these to be processed when the ensuing navigation is committed.
+  WebSearchableFormData web_searchable_form_data(form);
+  internal_data->set_searchable_form_url(web_searchable_form_data.url());
+  internal_data->set_searchable_form_encoding(
+      web_searchable_form_data.encoding().utf8());
 
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, WillSubmitForm(form));
 }