Fix integration tests in src/chrome and src/extensions so that we can turn on IO thread checks wi...

chrome/test/base/javascript_browser_test.cc

 // Copyright 2014 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/test/base/javascript_browser_test.h"
 
 #include "base/memory/ptr_util.h"
 #include "base/path_service.h"
 #include "base/strings/utf_string_conversions.h"
+#include "base/threading/thread_restrictions.h"
 #include "chrome/common/chrome_paths.h"
 #include "content/public/browser/web_ui.h"
 #include "ui/base/resource/resource_bundle.h"
 
 // static
 const base::FilePath::CharType
     JavaScriptBrowserTest::kA11yAuditLibraryJSPath[] =
         FILE_PATH_LITERAL("third_party/accessibility-audit/axs_testing.js");
 
 // static
@@ skipping 39 matching lines @@
 
   AddLibrary(base::FilePath(kMockJSPath));
   AddLibrary(base::FilePath(kChaiJSPath));
   AddLibrary(base::FilePath(kWebUILibraryJS));
 }
 
 // TODO(dtseng): Make this return bool (success/failure) and remove ASSERt_TRUE
 // calls.
 void JavaScriptBrowserTest::BuildJavascriptLibraries(
     std::vector<base::string16>* libraries) {
+  base::ThreadRestrictions::ScopedAllowIO allow_io;
   ASSERT_TRUE(libraries != NULL);
   std::vector<base::FilePath>::iterator user_libraries_iterator;
   for (user_libraries_iterator = user_libraries_.begin();
        user_libraries_iterator != user_libraries_.end();
        ++user_libraries_iterator) {
     std::string library_content;
     if (user_libraries_iterator->IsAbsolute()) {
       ASSERT_TRUE(
           base::ReadFileToString(*user_libraries_iterator, &library_content))
           << user_libraries_iterator->value();
@@ skipping 34 matching lines @@
   for (const auto& arg : test_func_args)
     baked_argument_list->Append(arg.CreateDeepCopy());
   arguments.push_back(std::move(baked_argument_list));
 
   std::vector<const base::Value*> ptr_vector;
   ptr_vector.reserve(arguments.size());
   for (const auto& argument : arguments)
     ptr_vector.push_back(argument.get());
   return content::WebUI::GetJavascriptCall(std::string("runTest"), ptr_vector);
 }