net: Implement canceling of all async operations in FileStream.

content/browser/download/base_file_unittest.cc

Index: content/browser/download/base_file_unittest.cc
diff --git a/content/browser/download/base_file_unittest.cc b/content/browser/download/base_file_unittest.cc
index 6175afe86f9279abd8a04ef7a969deddb919b143..be39aed4efb264207911f039cc6110d7f9d05019 100644
--- a/content/browser/download/base_file_unittest.cc
+++ b/content/browser/download/base_file_unittest.cc
@@ -77,6 +77,11 @@ class BaseFileTest : public testing::Test {
       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();