Adding Navigation Throttles to DevTools

content/public/test/test_navigation_observer.cc

 // Copyright (c) 2012 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/public/test/test_navigation_observer.h"
 
 #include "base/bind.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
@@ skipping 29 matching lines @@
   }
 
   void DidStartLoading() override {
     parent_->OnDidStartLoading(web_contents());
   }
 
   void DidStopLoading() override {
     parent_->OnDidStopLoading(web_contents());
   }
 
+  void DidFailLoad(RenderFrameHost* render_frame_host,
+                   const GURL& validated_url,
+                   int error_code,
+                   const base::string16& error_description,
+                   bool was_ignored_by_handler) override {
+    fprintf(stderr, "YARR! %s\n", validated_url.spec().c_str());

[nasko, 2016/07/15 14:42:31]

You plan to remove this before commit, right?

[alex clarke (OOO till 29th), 2016/07/15 17:12:12]

Done.

+  }
+
   void DidStartProvisionalLoadForFrame(RenderFrameHost* render_frame_host,
                                        const GURL& validated_url,
                                        bool is_error_page,
                                        bool is_iframe_srcdoc) override {
     parent_->OnDidStartProvisionalLoad(render_frame_host, validated_url,
                                        is_error_page, is_iframe_srcdoc);
   }
 
   void DidFailProvisionalLoad(
       RenderFrameHost* render_frame_host,
@@ skipping 132 matching lines @@
 
 void TestNavigationObserver::OnDidCommitProvisionalLoadForFrame(
     RenderFrameHost* render_frame_host,
     const GURL& url,
     ui::PageTransition transition_type) {
   last_navigation_url_ = url;
   last_navigation_succeeded_ = true;
 }
 
 }  // namespace content