Fix registerProtocolHandler implementation on Windows 8 and 10.

chrome/browser/shell_integration_win.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/shell_integration_win.h"
 
 #include <windows.h>
 #include <shlwapi.h>
 #include <shobjidl.h>
 #include <propkey.h>  // Needs to come after shobjidl.h.
@@ skipping 671 matching lines @@
   if (!ShellUtil::ShowMakeChromeDefaultProtocolClientSystemUI(dist, chrome_exe,
                                                               wprotocol)) {
     LOG(ERROR) << "Failed to launch the set-default-client Windows UI.";
     return false;
   }
 
   VLOG(1) << "Set-default-client Windows UI completed.";
   return true;
 }
 
+void SetAsDefaultProtocolClientUsingSystemSettings(
+    const std::string& protocol,
+    const base::Closure& on_finished_callback) {
+  DCHECK_CURRENTLY_ON(BrowserThread::FILE);
+
+  base::FilePath chrome_exe;
+  if (!PathService::Get(base::FILE_EXE, &chrome_exe)) {
+    NOTREACHED() << "Error getting app exe path";
+    on_finished_callback.Run();
+    return;
+  }
+
+  // The helper manages its own lifetime.
+  base::string16 wprotocol(base::UTF8ToUTF16(protocol));
+  static const wchar_t* const kProtocols[] = {wprotocol.c_str(), nullptr};
+  OpenSystemSettingsHelper::Begin(kProtocols, on_finished_callback);
+
+  BrowserDistribution* dist = BrowserDistribution::GetDistribution();
+  ShellUtil::ShowMakeChromeDefaultProtocolClientSystemUI(dist, chrome_exe,
+                                                         wprotocol);
+}
+
 }  // namespace win
 
 }  // namespace shell_integration