PlzNavigate: Fix wrong SourceLocation.

third_party/WebKit/Source/web/LocalFrameClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 472 matching lines @@
 
   NavigationPolicy user_policy;
   if (!NavigationPolicyFromMouseEvent(button_number, ctrl, shift, alt, meta,
                                       &user_policy))
     return false;
   return user_policy == kNavigationPolicyNewBackgroundTab;
 }
 
 NavigationPolicy LocalFrameClientImpl::DecidePolicyForNavigation(
     const ResourceRequest& request,
+    Document* origin_document,
     DocumentLoader* loader,
     NavigationType type,
     NavigationPolicy policy,
     bool replaces_current_history_item,
     bool is_client_redirect,
     HTMLFormElement* form,
     ContentSecurityPolicyDisposition
         should_check_main_world_content_security_policy) {
   if (!web_frame_->Client())
     return kNavigationPolicyIgnore;
@@ skipping 41 matching lines @@
 
   // Caching could be disabled for requests initiated by DevTools.
   // TODO(ananta)
   // We should extract the network cache state into a global component which
   // can be queried here and wherever necessary.
   navigation_info.is_cache_disabled =
       DevToolsAgent() ? DevToolsAgent()->CacheDisabled() : false;
   if (form)
     navigation_info.form = WebFormElement(form);
 
+  // The frame has navigated either by itself or by the action of the
+  // |origin_document| when it is defined. |source_location| represents the
+  // line of code that has initiated the navigation. It is used to let web
+  // developpers locate the root cause of blocked navigations.
   std::unique_ptr<SourceLocation> source_location =
-      SourceLocation::Capture(web_frame_->GetFrame()->GetDocument());
+      origin_document
+          ? SourceLocation::Capture(origin_document)
+          : SourceLocation::Capture(web_frame_->GetFrame()->GetDocument());
   if (source_location && !source_location->IsUnknown()) {
     navigation_info.source_location.url = source_location->Url();
     navigation_info.source_location.line_number = source_location->LineNumber();
     navigation_info.source_location.column_number =
         source_location->ColumnNumber();
   }
 
   WebNavigationPolicy web_policy =
       web_frame_->Client()->DecidePolicyForNavigation(navigation_info);
   return static_cast<NavigationPolicy>(web_policy);
@@ skipping 470 matching lines @@
 
 TextCheckerClient& LocalFrameClientImpl::GetTextCheckerClient() const {
   return web_frame_->GetTextCheckerClient();
 }
 
 std::unique_ptr<blink::WebURLLoader> LocalFrameClientImpl::CreateURLLoader() {
   return web_frame_->CreateURLLoader();
 }
 
 }  // namespace blink