Allow LoadNavigationErrorPage to run scripts

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 3323 matching lines @@
   UpdateEncoding(frame, frame->view()->pageEncoding().utf8());
 }
 
 void RenderFrameImpl::didChangeIcon(blink::WebLocalFrame* frame,
                                     blink::WebIconURL::Type icon_type) {
   DCHECK_EQ(frame_, frame);
   // TODO(nasko): Investigate wheather implementation should move here.
   render_view_->didChangeIcon(frame, icon_type);
 }
 
-void RenderFrameImpl::didFinishDocumentLoad(blink::WebLocalFrame* frame,
-                                            bool document_is_empty) {
+void RenderFrameImpl::didFinishDocumentLoad(blink::WebLocalFrame* frame) {
   TRACE_EVENT1("navigation,benchmark", "RenderFrameImpl::didFinishDocumentLoad",
                "id", routing_id_);
   DCHECK_EQ(frame_, frame);
   WebDataSource* ds = frame->dataSource();
   DocumentState* document_state = DocumentState::FromDataSource(ds);
   document_state->set_finish_document_load_time(Time::Now());
 
   Send(new FrameHostMsg_DidFinishDocumentLoad(routing_id_));
 
   FOR_EACH_OBSERVER(RenderViewObserver, render_view_->observers(),
                     DidFinishDocumentLoad(frame));
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_, DidFinishDocumentLoad());
 
   // Check whether we have new encoding name.
   UpdateEncoding(frame, frame->view()->pageEncoding().utf8());
+}
+
+void RenderFrameImpl::runScriptsAtDocumentReady(blink::WebLocalFrame* frame,
+                                                bool document_is_empty) {
+  DCHECK_EQ(frame_, frame);
+  base::WeakPtr<RenderFrameImpl> weak_self = weak_factory_.GetWeakPtr();
+
+  MojoBindingsController* mojo_bindings_controller =
+      MojoBindingsController::Get(this);
+  if (mojo_bindings_controller)
+    mojo_bindings_controller->RunScriptsAtDocumentReady();
+
+  if (!weak_self.get())
+    return;
+
+  GetContentClient()->renderer()->RunScriptsAtDocumentEnd(this);
+
+  // ContentClient might have deleted |frame| and |this| by now!
+  if (!weak_self.get())
+    return;
 
   // If this is an empty document with an http status code indicating an error,
   // we may want to display our own error page, so the user doesn't end up
   // with an unexplained blank page.
   if (!document_is_empty)
     return;
 
   // Do not show error page when DevTools is attached.
   RenderFrameImpl* localRoot = this;
   while (localRoot->frame_ && localRoot->frame_->parent() &&
          localRoot->frame_->parent()->isWebLocalFrame()) {
     localRoot = RenderFrameImpl::FromWebFrame(localRoot->frame_->parent());
     DCHECK(localRoot);
   }
   if (localRoot->devtools_agent_ && localRoot->devtools_agent_->IsAttached())
     return;
 
   // Display error page instead of a blank page, if appropriate.
   std::string error_domain = "http";
   InternalDocumentStateData* internal_data =
       InternalDocumentStateData::FromDataSource(frame->dataSource());
   int http_status_code = internal_data->http_status_code();
   if (GetContentClient()->renderer()->HasErrorPage(http_status_code,
                                                    &error_domain)) {
     WebURLError error;
     error.unreachableURL = frame->document().url();
     error.domain = WebString::fromUTF8(error_domain);
     error.reason = http_status_code;
+    // This call may run scripts, e.g. via the beforeunload event.
     LoadNavigationErrorPage(frame->dataSource()->request(), error, true);
   }
-}
-
-void RenderFrameImpl::runScriptsAtDocumentReady(blink::WebLocalFrame* frame) {
-  base::WeakPtr<RenderFrameImpl> weak_self = weak_factory_.GetWeakPtr();
-
-  MojoBindingsController* mojo_bindings_controller =
-      MojoBindingsController::Get(this);
-  if (mojo_bindings_controller)
-    mojo_bindings_controller->RunScriptsAtDocumentReady();
-
-  if (!weak_self.get())
-    return;
-
-  GetContentClient()->renderer()->RunScriptsAtDocumentEnd(this);
-  // Do not use |this| or |frame|! ContentClient might have deleted them by now!
+  // Do not use |this| or |frame| here without checking |weak_self|.
 }
 
 void RenderFrameImpl::didHandleOnloadEvents(blink::WebLocalFrame* frame) {
   DCHECK_EQ(frame_, frame);
   if (!frame->parent()) {
     FrameMsg_UILoadMetricsReportType::Value report_type =
         static_cast<FrameMsg_UILoadMetricsReportType::Value>(
             frame->dataSource()->request().inputPerfMetricReportPolicy());
     base::TimeTicks ui_timestamp = base::TimeTicks() +
         base::TimeDelta::FromSecondsD(
@@ skipping 2590 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