Format all dart: library files

sdk/lib/io/bytes_builder.dart

Index: sdk/lib/io/bytes_builder.dart
diff --git a/sdk/lib/io/bytes_builder.dart b/sdk/lib/io/bytes_builder.dart
index 1b61d30f4fa3f9744940133af1dc03208b058800..b5745e36829415e9ceeca089ec79e24ed826c6c9 100644
--- a/sdk/lib/io/bytes_builder.dart
+++ b/sdk/lib/io/bytes_builder.dart
@@ -78,7 +78,6 @@ abstract class BytesBuilder {
   void clear();
 }
 
-
 class _CopyingBytesBuilder implements BytesBuilder {
   // Start with 1024 bytes.
   static const int _INIT_SIZE = 1024;
@@ -90,8 +89,8 @@ class _CopyingBytesBuilder implements BytesBuilder {
 
   _CopyingBytesBuilder([int initialCapacity = 0])
       : _buffer = (initialCapacity <= 0)
-                      ? _emptyList
-                      : new Uint8List(_pow2roundup(initialCapacity));
+            ? _emptyList
+            : new Uint8List(_pow2roundup(initialCapacity));
 
   void add(List<int> bytes) {
     int bytesLength = bytes.length;
@@ -172,7 +171,6 @@ class _CopyingBytesBuilder implements BytesBuilder {
   }
 }
 
-
 class _BytesBuilder implements BytesBuilder {
   int _length = 0;
   final List<Uint8List> _chunks = [];