Switch temporary_file_stream to the TaskScheduler API.

content/browser/loader/temporary_file_stream_unittest.cc

Index: content/browser/loader/temporary_file_stream_unittest.cc
diff --git a/content/browser/loader/temporary_file_stream_unittest.cc b/content/browser/loader/temporary_file_stream_unittest.cc
index 4db92d3111c78d6d92aff3936ba1bdb286fb83a8..939d0aae3e01f17ce9d5199aa983e555dd07eba6 100644
--- a/content/browser/loader/temporary_file_stream_unittest.cc
+++ b/content/browser/loader/temporary_file_stream_unittest.cc
@@ -14,6 +14,7 @@
 #include "base/macros.h"
 #include "base/run_loop.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_utils.h"
 #include "net/base/file_stream.h"
 #include "net/base/io_buffer.h"
 #include "net/base/net_errors.h"
@@ -111,7 +112,7 @@ TEST(TemporaryFileStreamTest, Basic) {
 
   // Release everything. The file should be gone now.
   file_stream_waiter.Release();
-  base::RunLoop().RunUntilIdle();
+  content::RunAllBlockingPoolTasksUntilIdle();
 
   // The temporary should be gone now.
   EXPECT_FALSE(base::PathExists(file_path));