[mac] Implement a windowed extension install/permissions prompt.

chrome/browser/ui/cocoa/extensions/extension_install_prompt_test_utils.mm

 // 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.
 
 #import "chrome/browser/ui/cocoa/extensions/extension_install_prompt_test_utils.h"
 
 #include "base/file_util.h"
 #include "base/files/file_path.h"
 #include "base/json/json_file_value_serializer.h"
 #include "base/path_service.h"
 #include "chrome/common/chrome_paths.h"
 #include "extensions/common/extension.h"
 
 using extensions::Extension;
 
 namespace chrome {
 
 void MockExtensionInstallPromptDelegate::InstallUIProceed() {
   ++proceed_count_;
 }
 
 void MockExtensionInstallPromptDelegate::InstallUIAbort(bool user_initiated) {
   ++abort_count_;
 }
 
-scoped_refptr<Extension> LoadInstallPromptExtension() {
+scoped_refptr<extensions::Extension> LoadInstallPromptExtension(
+    const char* extension_dir_name,
+    const char* manifest_file) {
   scoped_refptr<Extension> extension;
 
   base::FilePath path;
   PathService::Get(chrome::DIR_TEST_DATA, &path);
   path = path.AppendASCII("extensions")
-             .AppendASCII("install_prompt")
-             .AppendASCII("extension.json");
+             .AppendASCII(extension_dir_name)
+             .AppendASCII(manifest_file);
 
   std::string error;
   JSONFileValueSerializer serializer(path);
   scoped_ptr<DictionaryValue> value(static_cast<DictionaryValue*>(
       serializer.Deserialize(NULL, &error)));
   if (!value.get()) {
     LOG(ERROR) << error;
     return extension;
   }
 
   extension = Extension::Create(
       path.DirName(), extensions::Manifest::INVALID_LOCATION, *value,
       Extension::NO_FLAGS, &error);
   if (!extension.get())
     LOG(ERROR) << error;
 
   return extension;
 }
 
+scoped_refptr<Extension> LoadInstallPromptExtension() {
+  return LoadInstallPromptExtension("install_prompt", "extension.json");
+}
+
 gfx::Image LoadInstallPromptIcon() {
   base::FilePath path;
   PathService::Get(chrome::DIR_TEST_DATA, &path);
   path = path.AppendASCII("extensions")
              .AppendASCII("install_prompt")
              .AppendASCII("icon.png");
 
   std::string file_contents;
   base::ReadFileToString(path, &file_contents);
 
@@ skipping 13 matching lines @@
 ExtensionInstallPrompt::Prompt BuildExtensionPostInstallPermissionsPrompt(
     Extension* extension) {
   ExtensionInstallPrompt::Prompt prompt(
       ExtensionInstallPrompt::POST_INSTALL_PERMISSIONS_PROMPT);
   prompt.set_extension(extension);
   prompt.set_icon(LoadInstallPromptIcon());
   return prompt;
 }
 
 }  // namespace chrome