Fix void foo(..) => ... to use { } instead.

sdk/lib/io/io_resource_info.dart

Index: sdk/lib/io/io_resource_info.dart
diff --git a/sdk/lib/io/io_resource_info.dart b/sdk/lib/io/io_resource_info.dart
index 92670841b409e733b4355a6d45415c3eff8afab1..7cea2312493e5bd29eb6d4798d0cd5838717d79d 100644
--- a/sdk/lib/io/io_resource_info.dart
+++ b/sdk/lib/io/io_resource_info.dart
@@ -54,7 +54,7 @@ abstract class _ReadWriteResourceInfo extends _IOResourceInfo {
   // In cases where we read but did not neccesarily get any bytes, use this to
   // update the readCount and timestamp. Manually update totalRead if any bytes
   // where acutally read.
-  void didRead() => addRead(0);
+  void didRead() { addRead(0); }
 
   void addWrite(int bytes) {
     totalWritten += bytes;
@@ -153,7 +153,7 @@ class _ProcessResourceInfo extends _IOResourceInfo{
 
   String get name => process._path;
 
-  void stopped() => ProcessStopped(this);
+  void stopped() { ProcessStopped(this); }
 
   Map<String, String> get fullValueMap =>
     {