Fix registerProtocolHandler implementation on Windows 8 and 10.

chrome/installer/util/scoped_user_protocol_entry.cc

 // Copyright 2015 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/installer/util/scoped_user_protocol_entry.h"
 
 #include "base/files/file_path.h"
 #include "base/strings/string16.h"
 #include "base/win/registry.h"
 #include "chrome/installer/util/registry_entry.h"
 #include "chrome/installer/util/shell_util.h"
 
-ScopedUserProtocolEntry::ScopedUserProtocolEntry() {
+ScopedUserProtocolEntry::ScopedUserProtocolEntry(const wchar_t* protocol) {
   entries_.push_back(new RegistryEntry(
-      base::FilePath(ShellUtil::kRegClasses).Append(L"http").value(),
+      base::FilePath(ShellUtil::kRegClasses).Append(protocol).value(),
       ShellUtil::kRegUrlProtocol, base::string16()));
   if (!entries_.back()->KeyExistsInRegistry(RegistryEntry::LOOK_IN_HKCU) &&
       ShellUtil::AddRegistryEntries(HKEY_CURRENT_USER, entries_)) {
     return;
   }
   entries_.clear();
 }
 
 ScopedUserProtocolEntry::~ScopedUserProtocolEntry() {
   // The empty key is deleted only if it's created by ctor().
@@ skipping 14 matching lines @@
   // There is no subkey.
   if (base::win::RegistryKeyIterator(HKEY_CURRENT_USER,
                                      entries_.back()->key_path().c_str())
           .SubkeyCount() > 0) {
     return;
   }
 
   entries_.back()->set_removal_flag(RegistryEntry::RemovalFlag::KEY);
   ShellUtil::AddRegistryEntries(HKEY_CURRENT_USER, entries_);
 }