Deal with frame removal by content 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 3343 matching lines @@
           main_frame->document().isPluginDocument()));
     }
   }
 
   FOR_EACH_OBSERVER(RenderFrameObserver, observers_,
                     DidCreateDocumentElement());
   FOR_EACH_OBSERVER(RenderViewObserver, render_view_->observers(),
                     DidCreateDocumentElement(frame));
 }
 
+void RenderFrameImpl::runScriptsAtDocumentElementAvailable(
+    blink::WebLocalFrame* frame) {
+  DCHECK(!frame_ || frame_ == frame);
+  base::WeakPtr<RenderFrameImpl> weak_self = weak_factory_.GetWeakPtr();
+
+  MojoBindingsController* mojo_bindings_controller =
+      MojoBindingsController::Get(this);
+  if (mojo_bindings_controller)
+    mojo_bindings_controller->RunScriptsAtDocumentStart();
+
+  if (!weak_self.get())
+    return;
+
+  GetContentClient()->renderer()->RunScriptsAtDocumentStart(this);
+  // Do not use |this| or |frame|! ContentClient might have deleted them by now!
+}
+
 void RenderFrameImpl::didReceiveTitle(blink::WebLocalFrame* frame,
                                       const blink::WebString& title,
                                       blink::WebTextDirection direction) {
   DCHECK_EQ(frame_, frame);
   // Ignore all but top level navigations.
   if (!frame->parent()) {
     base::string16 title16 = title;
     base::trace_event::TraceLog::GetInstance()->UpdateProcessLabel(
         routing_id_, base::UTF16ToUTF8(title16));
 
@@ skipping 55 matching lines @@
   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;
     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!
+}
+
 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(
             frame->dataSource()->request().uiStartTime());
 
@@ skipping 2663 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