Desaturate the favicon shown in the tab when a network error is encountered

chrome/browser/ui/views/tabs/browser_tab_strip_controller.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 "chrome/browser/ui/views/tabs/browser_tab_strip_controller.h"
 
 #include "base/auto_reset.h"
 #include "base/macros.h"
 #include "base/task_runner_util.h"
 #include "base/threading/sequenced_worker_pool.h"
@@ skipping 17 matching lines @@
 #include "chrome/browser/ui/views/tabs/tab_strip.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "components/favicon/content/content_favicon_driver.h"
 #include "components/metrics/proto/omnibox_event.pb.h"
 #include "components/mime_util/mime_util.h"
 #include "components/omnibox/browser/autocomplete_classifier.h"
 #include "components/omnibox/browser/autocomplete_match.h"
 #include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/navigation_controller.h"
+#include "content/public/browser/navigation_entry.h"
+#include "content/public/browser/navigation_handle.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/plugin_service.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/webplugininfo.h"
 #include "ipc/ipc_message.h"
 #include "net/base/filename_util.h"
 #include "ui/base/models/list_selection_model.h"
 #include "ui/gfx/image/image.h"
 #include "ui/views/controls/menu/menu_runner.h"
@@ skipping 451 matching lines @@
   data->title = contents->GetTitle();
   data->url = contents->GetURL();
   data->loading = contents->IsLoading();
   data->crashed_status = contents->GetCrashedStatus();
   data->incognito = contents->GetBrowserContext()->IsOffTheRecord();
   data->pinned = model_->IsTabPinned(model_index);
   data->show_icon = data->pinned || favicon::ShouldDisplayFavicon(contents);
   data->blocked = model_->IsTabBlocked(model_index);
   data->app = extensions::TabHelper::FromWebContents(contents)->is_app();
   data->alert_state = chrome::GetTabAlertStateForContents(contents);
+
+  content::NavigationEntry* entry =
+      contents->GetController().GetLastCommittedEntry();
+  data->network_error =
+      entry && (entry->GetPageType() == content::PAGE_TYPE_ERROR);
 }
 
 void BrowserTabStripController::SetTabDataAt(content::WebContents* web_contents,
                                              int model_index) {
   TabRendererData data;
   SetTabRendererDataFromModel(web_contents, model_index, &data, EXISTING_TAB);
   tabstrip_->SetTabData(model_index, data);
 }
 
 void BrowserTabStripController::StartHighlightTabsForCommand(
@@ skipping 52 matching lines @@
   content::WebPluginInfo plugin;
   tabstrip_->FileSupported(
       url,
       mime_type.empty() || mime_util::IsSupportedMimeType(mime_type) ||
           content::PluginService::GetInstance()->GetPluginInfo(
               -1,                // process ID
               MSG_ROUTING_NONE,  // routing ID
               model_->profile()->GetResourceContext(), url, GURL(), mime_type,
               false, NULL, &plugin, NULL));
 }