Add an error page for resources blocked via XSS Auditor.

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 2461 matching lines @@
 #endif
 #endif
   return NULL;
 }
 
 void RenderFrameImpl::LoadURLExternally(const blink::WebURLRequest& request,
                                         blink::WebNavigationPolicy policy) {
   loadURLExternally(request, policy, WebString(), false);
 }
 
+void RenderFrameImpl::loadErrorPage(int reason) {
+  blink::WebURLError error;
+  error.unreachableURL = frame_->document().url();
+  error.domain = WebString::fromUTF8(net::kErrorDomain);
+  error.reason = reason;
+
+  std::string error_html;
+  GetContentClient()->renderer()->GetNavigationErrorStrings(
+      this, frame_->dataSource()->request(), error, &error_html, nullptr);
+
+  frame_->loadData(error_html, WebString::fromUTF8("text/html"),
+                   WebString::fromUTF8("UTF-8"), GURL(kUnreachableWebDataURL),

[Tom Sepez, 2016/10/20 18:26:58]

Maybe truncate the ? and # portions of the url?

+                   error.unreachableURL, true, blink::WebFrameLoadType::Standard,
+                   blink::WebHistoryItem(), blink::WebHistoryDifferentDocumentLoad, true);
+}
+
 void RenderFrameImpl::ExecuteJavaScript(const base::string16& javascript) {
   OnJavaScriptExecuteRequest(javascript, 0, false);
 }
 
 service_manager::InterfaceRegistry* RenderFrameImpl::GetInterfaceRegistry() {
   return interface_registry_.get();
 }
 
 service_manager::InterfaceProvider* RenderFrameImpl::GetRemoteInterfaces() {
   return remote_interfaces_.get();
@@ skipping 4057 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content