MD History: Update sign in state in data source

chrome/browser/ui/webui/history_ui.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/webui/history_ui.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/memory/ref_counted_memory.h"
@@ skipping 154 matching lines @@
   source->AddResourcePath(kOtherDevicesJsFile, IDR_OTHER_DEVICES_JS);
   source->SetDefaultResource(IDR_HISTORY_HTML);
   source->DisableDenyXFrameOptions();
   source->DisableI18nAndUseGzipForAllPaths();
 
   return source;
 }
 
 }  // namespace
 
-HistoryUI::HistoryUI(content::WebUI* web_ui) : WebUIController(web_ui) {
+HistoryUI::HistoryUI(content::WebUI* web_ui)
+    : WebUIController(web_ui), weak_ptr_factory_(this) {
   web_ui->AddMessageHandler(new BrowsingHistoryHandler());
   web_ui->AddMessageHandler(new MetricsHandler());
 
+  Profile* profile = Profile::FromWebUI(web_ui);
+  data_source_ = CreateHistoryUIHTMLSource(profile);
+  // Set up the chrome://history-frame/ source.
+  content::WebUIDataSource::Add(profile, data_source_);
+
   // On mobile we deal with foreign sessions differently.
 #if !defined(OS_ANDROID)
   if (search::IsInstantExtendedAPIEnabled()) {
     web_ui->AddMessageHandler(new browser_sync::ForeignSessionHandler());
-    web_ui->AddMessageHandler(new HistoryLoginHandler());
+    web_ui->AddMessageHandler(new HistoryLoginHandler(
+        base::Bind(&HistoryUI::SignInChanged, weak_ptr_factory_.GetWeakPtr())));
   }
 #endif
 
   // TODO(crbug.com/595332): Since the API to query other forms of browsing
   // history is not ready yet, make it possible to test the history UI as if
   // it were. If the user opens chrome://history/?reset_ofbh, we will assume
   // that other forms of browsing history exist (for all accounts), and we will
   // also reset the one-time notice shown in the Clear Browsing Data dialog.
   // This code should be removed as soon as the API is ready.
   GURL url = web_ui->GetWebContents()->GetVisibleURL();
   if (url.has_query() && url.query() == "reset_ofbh") {
     Profile::FromWebUI(web_ui)->GetPrefs()->SetInteger(
         browsing_data::prefs::kClearBrowsingDataHistoryNoticeShownTimes, 0);
     browsing_data::testing::
         g_override_other_forms_of_browsing_history_query = true;
   }
-
-  // Set up the chrome://history-frame/ source.
-  Profile* profile = Profile::FromWebUI(web_ui);
-  content::WebUIDataSource::Add(profile, CreateHistoryUIHTMLSource(profile));
 }
 
 HistoryUI::~HistoryUI() {}
 
 // static
 base::RefCountedMemory* HistoryUI::GetFaviconResourceBytes(
       ui::ScaleFactor scale_factor) {
   return ResourceBundle::GetSharedInstance().
       LoadDataResourceBytesForScale(IDR_HISTORY_FAVICON, scale_factor);
 }
+
+void HistoryUI::SignInChanged(bool signed_in) {
+  // Recreate the data source so sign in state get updated in there.
+  Profile* profile = Profile::FromWebUI(web_ui());
+  data_source_ = CreateHistoryUIHTMLSource(profile);
+  content::WebUIDataSource::Add(profile, data_source_);
+}