PlzNavigate: Use WebNavigationPolicyHandledByClient

content/renderer/render_frame_impl.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 4649 matching lines @@
 
   // If we end up reusing this WebRequest (for example, due to a #ref click),
   // we don't want the transition type to persist.  Just clear it.
   navigation_state->set_transition_type(ui::PAGE_TRANSITION_LINK);
 }
 
 void RenderFrameImpl::didStartLoading(bool to_different_document) {
   TRACE_EVENT1("navigation", "RenderFrameImpl::didStartLoading",
                "id", routing_id_);
   render_view_->FrameDidStartLoading(frame_);
-  Send(new FrameHostMsg_DidStartLoading(routing_id_, to_different_document));
+
+  // PlzNavigate: the browser is responsible for knowing the start of all
+  // non-synchronous navigations.
+  if (!IsBrowserSideNavigationEnabled() || !to_different_document)
+    Send(new FrameHostMsg_DidStartLoading(routing_id_, to_different_document));
 }
 
 void RenderFrameImpl::didStopLoading() {
   TRACE_EVENT1("navigation", "RenderFrameImpl::didStopLoading",
                "id", routing_id_);
   render_view_->FrameDidStopLoading(frame_);
   Send(new FrameHostMsg_DidStopLoading(routing_id_));
 }
 
 void RenderFrameImpl::didChangeLoadProgress(double load_progress) {
@@ skipping 275 matching lines @@
     return blink::WebNavigationPolicyIgnore;
   }
 
   // PlzNavigate: if the navigation is not synchronous, send it to the browser.
   // This includes navigations with no request being sent to the network stack.
   if (IsBrowserSideNavigationEnabled() &&
       info.urlRequest.checkForBrowserSideNavigation() &&
       ShouldMakeNetworkRequestForURL(url)) {
     BeginNavigation(&info.urlRequest, info.replacesCurrentHistoryItem,
                     info.isClientRedirect);
-    return blink::WebNavigationPolicyIgnore;
+    return blink::WebNavigationPolicyHandledByClient;
   }
 
   return info.defaultPolicy;
 }
 
 void RenderFrameImpl::OnGetSavableResourceLinks() {
   std::vector<GURL> resources_list;
   std::vector<SavableSubframe> subframes;
   SavableResourcesResult result(&resources_list, &subframes);
 
@@ skipping 1160 matching lines @@
                                     int match_count,
                                     int ordinal,
                                     const WebRect& selection_rect,
                                     bool final_status_update) {
   Send(new FrameHostMsg_Find_Reply(routing_id_, request_id, match_count,
                                    selection_rect, ordinal,
                                    final_status_update));
 }
 
 }  // namespace content