Reduce/remove usage of BrowserThread in content/browser/loader.

content/browser/loader/temporary_file_stream_unittest.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 "content/browser/loader/temporary_file_stream.h"
 
 #include <string.h>
 #include <string>
 #include <utility>
 
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/macros.h"
 #include "base/run_loop.h"
+#include "base/threading/thread_task_runner_handle.h"
+#include "content/browser/loader/loader_globals.h"
 #include "content/public/test/test_browser_thread_bundle.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
 #include "net/base/test_completion_callback.h"
 #include "storage/browser/blob/shareable_file_reference.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using storage::ShareableFileReference;
 
@@ skipping 33 matching lines @@
   base::RunLoop loop_;
   base::File::Error error_;
   std::unique_ptr<net::FileStream> file_stream_;
   scoped_refptr<ShareableFileReference> deletable_file_;
 };
 
 }  // namespace
 
 TEST(TemporaryFileStreamTest, Basic) {
   TestBrowserThreadBundle thread_bundle(TestBrowserThreadBundle::IO_MAINLOOP);
+  // Dummy instance of the LoaderGlobals class to ensure that the UI and IO
+  // task runners are available for content/browser/loader code.
+  // TODO(ananta)
+  // Avoid this hack.
+  LoaderGlobals loader_globals(base::ThreadTaskRunnerHandle::Get(),
+                               base::ThreadTaskRunnerHandle::Get());
 
   // Create a temporary.
   WaitForFileStream file_stream_waiter;
   CreateTemporaryFileStream(base::Bind(&WaitForFileStream::OnFileStreamCreated,
                                        base::Unretained(&file_stream_waiter)));
   file_stream_waiter.Wait();
 
   // The temporary should exist.
   EXPECT_EQ(base::File::FILE_OK, file_stream_waiter.error());
   base::FilePath file_path = file_stream_waiter.deletable_file()->path();
@@ skipping 32 matching lines @@
 
   // Release everything. The file should be gone now.
   file_stream_waiter.Release();
   base::RunLoop().RunUntilIdle();
 
   // The temporary should be gone now.
   EXPECT_FALSE(base::PathExists(file_path));
 }
 
 }  // content