Reland 73532.

chrome/browser/dom_ui/dom_ui_browsertest.cc

 // Copyright (c) 2011 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/dom_ui/dom_ui_browsertest.h"
 
 #include "base/path_service.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/test/ui_test_utils.h"
+#include "ui/base/resource/resource_bundle.h"
 
 static const FilePath::CharType* kDOMUILibraryJS =
     FILE_PATH_LITERAL("test_api.js");
 static const FilePath::CharType* kDOMUITestFolder =
     FILE_PATH_LITERAL("dom_ui");
 
 bool DOMUITest::RunDOMUITest(const FilePath::CharType* src_path) {
   std::string content;
   BuildJavaScriptTest(FilePath(src_path), &content);
-  handler_->Attach(
-      browser()->GetSelectedTabContents()->dom_ui());
-  return handler_->Execute(content);
+  SetupHandlers();
+  return test_handler_->Execute(content);
 }
 
-DOMUITest::DOMUITest() : handler_(new DOMUITestHandler()) {}
+DOMUITest::DOMUITest() : test_handler_(new DOMUITestHandler()) {}
 
 void DOMUITest::SetUpInProcessBrowserTestFixture() {
   ASSERT_TRUE(PathService::Get(chrome::DIR_TEST_DATA, &test_data_directory_));
   test_data_directory_ = test_data_directory_.Append(kDOMUITestFolder);
+
+  // TODO(dtseng): should this be part of every BrowserTest or just DOMUI test.
+  FilePath resources_pack_path;
+  PathService::Get(chrome::FILE_RESOURCES_PACK, &resources_pack_path);
+  ResourceBundle::AddDataPackToSharedInstance(resources_pack_path);
 }
 
 void DOMUITest::BuildJavaScriptTest(const FilePath& src_path,
                                     std::string* content) {
   ASSERT_TRUE(content != NULL);
   std::string library_content, src_content;
   ASSERT_TRUE(file_util::ReadFileToString(
       test_data_directory_.Append(FilePath(kDOMUILibraryJS)),
           &library_content));
   ASSERT_TRUE(file_util::ReadFileToString(
       test_data_directory_.Append(src_path), &src_content));
 
   content->append(library_content);
   content->append(";\n");
   content->append(src_content);
 }
 
+void DOMUITest::SetupHandlers() {
+  DOMUI* dom_ui_instance =
+      browser()->GetSelectedTabContents()->dom_ui();
+  ASSERT_TRUE(dom_ui_instance != NULL);
+  dom_ui_instance->register_callback_overwrites(true);
+  test_handler_->Attach(dom_ui_instance);
+
+  if (GetMockMessageHandler())
+    GetMockMessageHandler()->Attach(dom_ui_instance);
+}
+
 IN_PROC_BROWSER_TEST_F(DOMUITest, TestSamplePass) {
   // Navigate to UI.
   // TODO(dtseng): make accessor for subclasses to return?
   ui_test_utils::NavigateToURL(browser(), GURL(chrome::kChromeUIDownloadsURL));
 
   ASSERT_TRUE(RunDOMUITest(FILE_PATH_LITERAL("sample_downloads.js")));
 }