net: Implement canceling of all async operations in FileStream.

content/browser/download/base_file_unittest.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 "content/browser/download/base_file.h"
 
 #include "base/file_util.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/scoped_temp_dir.h"
@@ skipping 59 matching lines @@
 
     FilePath full_path = base_file_->full_path();
 
     if (!expected_data_.empty() && !expected_error_) {
       // Make sure the data has been properly written to disk.
       std::string disk_data;
       EXPECT_TRUE(file_util::ReadFileToString(full_path, &disk_data));
       EXPECT_EQ(expected_data_, disk_data);
     }
 
+    // Stream pointers should be closed before |base_file_| to allow stream
+    // objects to be actually closed and deleted and to allow the files to be
+    // deleted on Win in BaseFile destructor.
+    file_stream_.reset();
+    mock_file_stream_.reset();
     // Make sure the mock BrowserThread outlives the BaseFile to satisfy
     // thread checks inside it.
     base_file_.reset();
 
     EXPECT_EQ(expect_file_survives_, file_util::PathExists(full_path));
   }
 
   void ResetHash() {
     secure_hash_.reset(crypto::SecureHash::Create(crypto::SecureHash::SHA256));
     memcpy(sha256_hash_, kEmptySha256Hash, kSha256HashLen);
@@ skipping 563 matching lines @@
   // be a string-wise match to base_file_->full_path().DirName() even though
   // they are in the same directory.
   FilePath temp_file;
   ASSERT_TRUE(file_util::CreateTemporaryFileInDir(temp_dir_.path(),
                                                   &temp_file));
   ASSERT_FALSE(temp_file.empty());
   EXPECT_STREQ(temp_file.DirName().value().c_str(),
                base_file_->full_path().DirName().value().c_str());
   base_file_->Finish();
 }