Privatize StrongBinding lifetime management

chrome/utility/shell_handler_impl_win.cc

 // Copyright 2016 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/utility/shell_handler_impl_win.h"
 
 #include <shldisp.h>
 
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/path_service.h"
 #include "base/scoped_native_library.h"
 #include "base/win/scoped_bstr.h"
 #include "base/win/scoped_com_initializer.h"
 #include "base/win/scoped_comptr.h"
 #include "base/win/scoped_variant.h"
 #include "base/win/shortcut.h"
 #include "chrome/installer/util/install_util.h"
 #include "content/public/utility/utility_thread.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace {
 
 // This class checks if the current executable is pinned to the taskbar. It also
 // keeps track of the errors that occurs that prevents it from getting a result.
 class IsPinnedToTaskbarHelper {
  public:
   IsPinnedToTaskbarHelper() = default;
 
   // Returns true if the current executable is pinned to the taskbar.
@@ skipping 169 matching lines @@
     if (DirectoryContainsPinnedShortcutForProgram(directory,
                                                   current_exe_compare)) {
       return true;
     }
   }
   return false;
 }
 
 }  // namespace
 
+ShellHandlerImpl::ShellHandlerImpl() = default;
+
+ShellHandlerImpl::~ShellHandlerImpl() = default;
+
 // static
 void ShellHandlerImpl::Create(mojom::ShellHandlerRequest request) {
-  new ShellHandlerImpl(std::move(request));
+  mojo::MakeStrongBinding(base::MakeUnique<ShellHandlerImpl>(),
+                          std::move(request));
 }
 
-ShellHandlerImpl::ShellHandlerImpl(mojom::ShellHandlerRequest request)
-    : binding_(this, std::move(request)) {}
-
-ShellHandlerImpl::~ShellHandlerImpl() = default;
-
 void ShellHandlerImpl::IsPinnedToTaskbar(
     const IsPinnedToTaskbarCallback& callback) {
   IsPinnedToTaskbarHelper helper;
   bool is_pinned_to_taskbar = helper.GetResult();
   callback.Run(!helper.error_occured(), is_pinned_to_taskbar);
 }