Make line_splitter_test not use multi-line strings.

tests/lib/lib.status

Index: tests/lib/lib.status
diff --git a/tests/lib/lib.status b/tests/lib/lib.status
index 35181f660378d4652563d6332dd97e9364899936..8d333509491f6f4465fb3c5be586904077b295db 100644
--- a/tests/lib/lib.status
+++ b/tests/lib/lib.status
@@ -332,12 +332,6 @@ convert/streamed_conversion_json_utf8_decode_test: Skip  # Verification not yet
 mirrors/immutable_collections_test: SkipSlow  # Timeout.
 convert/streamed_conversion_json_utf8_decode_test: Skip  # Timeout.
 
-[ $compiler == dart2js && $system == windows && $runtime == chrome ]
-convert/line_splitter_test: RuntimeError
-
-[ $compiler == dart2js && $system == windows && $runtime == ff ]
-convert/line_splitter_test: RuntimeError
-
 [ $compiler == dart2js && $cps_ir ]
 async/async_await_zones_test: Crash # bailout: (await for(var x in bar().take(100)){sum+= x;}): await for
 async/stream_empty_test: RuntimeError # $async$temp1.runTest_unreachable is not a function