Move all tests using dart:io to a separate directory

tests/standalone/standalone.status

Index: tests/standalone/standalone.status
diff --git a/tests/standalone/standalone.status b/tests/standalone/standalone.status
index 9858f2ac4c344c2a92e011e3da3369ab334d3831..7885f7c3103c2b5909e1ec1da8fc9dfd5a233856 100644
--- a/tests/standalone/standalone.status
+++ b/tests/standalone/standalone.status
@@ -4,69 +4,30 @@
 
 prefix standalone
 
+TimeoutTest: Skip  # Timeout test for testing the test runner.
+FailTest: Fail, OK # Fails intentionally
+
 [ $component == vm && $checked ]
 # These tests have type errors on purpose.
-ProcessInvalidArgumentsTest: Fail, OK
-DirectoryInvalidArgumentsTest: Fail, OK
-FileInvalidArgumentsTest: Fail, OK
+io/ProcessInvalidArgumentsTest: Fail, OK
+io/DirectoryInvalidArgumentsTest: Fail, OK
+io/FileInvalidArgumentsTest: Fail, OK
 
 [ $component == vm]
-ManyEchoServerTest: Skip        # Bug 5103754
+io/ManyEchoServerTest: Skip        # Bug 5103754
 # These tests fail, crash, and timeout to test the testing infrastructure.
-FailTest: Fail
-TimeoutTest: Skip  # Uses too much time to test on many platforms, for no gain.
-TestExtensionTest: Fail  # shared library in wrong place (issue 1817)
+io/TestExtensionTest: Fail  # shared library in wrong place (issue 1817)
 
 [ $component == vm && $system == macos]
 # This test fails with "Too many open files" on the Mac OS buildbot.
-SocketManyConnectionsTest: Skip
-TestExtensionTest: Skip  # Extensions not implemented on MacOS
+io/SocketManyConnectionsTest: Skip
+io/TestExtensionTest: Skip  # Extensions not implemented on MacOS
 
 [ $component == vm && $system == win32]
-TestExtensionTest: Skip  # Extensions not implemented on Windows
+io/TestExtensionTest: Skip  # Extensions not implemented on Windows
 
 [ $component == dartium ]
-# Server specific tests OK to fail in the browser
-EchoServerTest: Skip  # Uses Socket
-EchoServerStreamTest: Skip # Uses Socket
-EchoServerStreamReadUntilTest: Skip # Uses Socket
-ManyEchoServerTest: Skip # Uses Socket
-SocketCloseTest: Skip # Uses Socket
-SocketExceptionTest: Skip # Uses Socket
-SocketManyConnectionsTest: Skip # Uses Socket
-SocketStreamCloseTest: Skip # Uses Socket
-ReadIntoConstList: Skip # Uses File
-FileTest: Skip
-ListInputStreamTest: Skip # Uses InputStream
-ListOutputStreamTest: Skip # Uses OutputStream
-ManyEchoServerTest: Skip  # Uses Socket
-TimerTest: Skip # Uses EventHandler
-TimerRepeatTest: Skip # Uses EventHandler
-MultipleTimerTest: Skip # Uses EventHandler
-TimerCancelTest: Skip # Uses EventHandler
-TimerCancel1Test: Skip # Uses EventHandler
-TimerCancel2Test: Skip # Uses EventHandler
-FileInputStreamTest: Skip  # Uses TextFileInputStream.
-Process*: Skip # Uses Process
-Directory*: Skip # Uses Directory
-StreamPipeTest: Skip # Uses Socket
-StringStreamTest: Skip # Uses InputStream
-StatusFileParserTest: Skip # Uses FileInputStream
-OptionsTest: Skip # Expects options being passed from command line.
-FailTest: Fail # Fails intentionally
-TimeoutTest: Skip # Uses Socket
-TestRunnerTest: Skip # Uses Process
-FileInvalidArgumentsTest: Skip # Uses File
-PlatformTest: Skip # Uses Platform
-ChunkedStreamTest: Skip # Uses InputStream
-DartStdIOPipeTest: Skip # Uses dart:io
-FileOutputStreamTest: Skip # Uses dart:io
-HttpTest: Skip # Uses dart:io
-HttpParserTest: Skip # Uses dart:io
-UrlEncodingTest: Skip # Uses dart:io
-ManyDirectoryOperationsTest: Skip # Uses dart:io
-ManyFileOperationsTest: Skip # Uses dart:io
-TestExtensionTest: Skip # Extensions implemented only in Dart shell.
+io/*: Skip # Don't run tests using dart:io in the browser
 
 [ $component == dartc || $component == chromium ]
 *: Skip