PlzNavigate: stop navigations when opening a document for write

content/browser/frame_host/navigator_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/browser/frame_host/navigator_impl.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "base/metrics/histogram_macros.h"
@@ skipping 990 matching lines @@
   // The renderer-initiated navigation request is ignored iff a) there is an
   // ongoing request b) which is browser or user-initiated and c) the renderer
   // request is not user-initiated.
   if (ongoing_navigation_request &&
       (ongoing_navigation_request->browser_initiated() ||
        ongoing_navigation_request->begin_params().has_user_gesture) &&
       !begin_params.has_user_gesture) {
     RenderFrameHost* current_frame_host =
         frame_tree_node->render_manager()->current_frame_host();
     current_frame_host->Send(
-        new FrameMsg_Stop(current_frame_host->GetRoutingID()));
+        new FrameMsg_DroppedNavigation(current_frame_host->GetRoutingID()));
     return;
   }
 
   // In all other cases the current navigation, if any, is canceled and a new
   // NavigationRequest is created for the node.
   frame_tree_node->CreatedNavigationRequest(
       NavigationRequest::CreateRendererInitiated(
           frame_tree_node, common_params, begin_params,
           controller_->GetLastCommittedEntryIndex(),
           controller_->GetEntryCount()));
@@ skipping 14 matching lines @@
 
   // For main frames, NavigationHandle will be created after the call to
   // |DidStartMainFrameNavigation|, so it receives the most up to date pending
   // entry from the NavigationController.
   NavigationEntry* pending_entry = controller_->GetPendingEntry();
   navigation_request->CreateNavigationHandle(
       pending_entry ? pending_entry->GetUniqueID() : 0);
   navigation_request->BeginNavigation();
 }
 
+void NavigatorImpl::OnAbortNavigation(FrameTreeNode* frame_tree_node) {
+  DCHECK(frame_tree_node);
+
+  NavigationRequest* ongoing_navigation_request =
+      frame_tree_node->navigation_request();
+  if (!ongoing_navigation_request ||
+      ongoing_navigation_request->browser_initiated()) {
+    return;
+  }
+
+  // Abort the renderer-initiated navigation request.
+  CancelNavigation(frame_tree_node);
+}
+
 // PlzNavigate
 void NavigatorImpl::CancelNavigation(FrameTreeNode* frame_tree_node) {
   CHECK(IsBrowserSideNavigationEnabled());
   frame_tree_node->ResetNavigationRequest(false);
   if (frame_tree_node->IsMainFrame())
     navigation_data_.reset();
 }
 
 void NavigatorImpl::LogResourceRequestTime(
     base::TimeTicks timestamp, const GURL& url) {
@@ skipping 232 matching lines @@
     if (navigation_handle)
       navigation_handle->update_entry_id_for_transfer(entry->GetUniqueID());
 
     controller_->SetPendingEntry(std::move(entry));
     if (delegate_)
       delegate_->NotifyChangedNavigationState(content::INVALIDATE_TYPE_URL);
   }
 }
 
 }  // namespace content