[Extensions] Make chrome://extensions use developerPrivate for unpacked loading

chrome/browser/extensions/api/developer_private/entry_picker.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/extensions/api/developer_private/entry_picker.h"
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/strings/string_util.h"
 #include "chrome/browser/extensions/api/developer_private/developer_private_api.h"
@@ skipping 14 matching lines @@
 namespace api {
 
 EntryPicker::EntryPicker(EntryPickerClient* client,
                          content::WebContents* web_contents,
                          ui::SelectFileDialog::Type picker_type,
                          const base::FilePath& last_directory,
                          const base::string16& select_title,
                          const ui::SelectFileDialog::FileTypeInfo& info,
                          int file_type_index)
     : client_(client) {
-  select_file_dialog_ = ui::SelectFileDialog::Create(
-      this, new ChromeSelectFilePolicy(web_contents));
-
-  gfx::NativeWindow owning_window = web_contents ?
-      platform_util::GetTopLevel(web_contents->GetNativeView()) :
-      NULL;
-
   if (g_skip_picker_for_test) {
     if (g_path_to_be_picked_for_test) {
       content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
           base::Bind(
               &EntryPicker::FileSelected,
               base::Unretained(this), *g_path_to_be_picked_for_test, 1,
-              static_cast<void*>(NULL)));
+              static_cast<void*>(nullptr)));
     } else {
       content::BrowserThread::PostTask(content::BrowserThread::UI, FROM_HERE,
           base::Bind(
               &EntryPicker::FileSelectionCanceled,
-              base::Unretained(this), static_cast<void*>(NULL)));
+              base::Unretained(this), static_cast<void*>(nullptr)));
     }
     return;
   }
 
+  select_file_dialog_ = ui::SelectFileDialog::Create(
+      this, new ChromeSelectFilePolicy(web_contents));
+
+  gfx::NativeWindow owning_window = web_contents ?
+      platform_util::GetTopLevel(web_contents->GetNativeView()) :
+      nullptr;
+
   select_file_dialog_->SelectFile(picker_type,
                                   select_title,
                                   last_directory,
                                   &info,
                                   file_type_index,
                                   base::FilePath::StringType(),
                                   owning_window,
-                                  NULL);
+                                  nullptr);
 }
 
 EntryPicker::~EntryPicker() {}
 
 void EntryPicker::FileSelected(const base::FilePath& path,
                                int index,
                                void* params) {
   client_->FileSelected(path);
   delete this;
 }
@@ skipping 24 matching lines @@
 }
 
 // static
 void EntryPicker::StopSkippingPickerForTest() {
   g_skip_picker_for_test = false;
 }
 
 }  // namespace api
 
 }  // namespace extensions