Add new UMA stats for parallelizable download

content/browser/download/download_file_unittest.cc

Index: content/browser/download/download_file_unittest.cc
diff --git a/content/browser/download/download_file_unittest.cc b/content/browser/download/download_file_unittest.cc
index 7de9f3d1637450d8079a2b6e02ff10baed7b1bea..11b943e3da204da46037191f616c16699d579f45 100644
--- a/content/browser/download/download_file_unittest.cc
+++ b/content/browser/download/download_file_unittest.cc
@@ -243,7 +243,7 @@ class DownloadFileTest : public testing::Test {
         base::Bind(&DownloadFileTest::SetInterruptReasonCallback,
                    weak_ptr_factory.GetWeakPtr(), loop_runner.QuitClosure(),
                    &result),
-        DownloadFile::CancelRequestCallback(), received_slices);
+        DownloadFile::CancelRequestCallback(), received_slices, true);
     loop_runner.Run();
 
     ::testing::Mock::VerifyAndClearExpectations(input_stream_);