Run dartfmt on all files under runtime.

runtime/observatory/tests/service/dev_fs_weird_char_test.dart

Index: runtime/observatory/tests/service/dev_fs_weird_char_test.dart
diff --git a/runtime/observatory/tests/service/dev_fs_weird_char_test.dart b/runtime/observatory/tests/service/dev_fs_weird_char_test.dart
index 9ee241284408dd78bb6c7f121ccb008bf6137f83..a5c9ef72f87618c582d56c3d9d2f15da9df2a519 100644
--- a/runtime/observatory/tests/service/dev_fs_weird_char_test.dart
+++ b/runtime/observatory/tests/service/dev_fs_weird_char_test.dart
@@ -17,30 +17,27 @@ var tests = [
 
     var result;
     // Create DevFS.
-    result = await vm.invokeRpcNoUpgrade('_createDevFS', { 'fsName': fsId });
+    result = await vm.invokeRpcNoUpgrade('_createDevFS', {'fsName': fsId});
     expect(result['type'], equals('FileSystem'));
     expect(result['name'], equals(fsId));
     expect(result['uri'], new isInstanceOf<String>());
 
     // Write the file.
-    result = await vm.invokeRpcNoUpgrade('_writeDevFSFile', {
-        'fsName': fsId,
-        'path': filePath,
-        'fileContents': fileContents
-    });
+    result = await vm.invokeRpcNoUpgrade('_writeDevFSFile',
+        {'fsName': fsId, 'path': filePath, 'fileContents': fileContents});
     expect(result['type'], equals('Success'));
 
     // Read the file back.
     result = await vm.invokeRpcNoUpgrade('_readDevFSFile', {
-        'fsName': fsId,
-        'path': filePath,
+      'fsName': fsId,
+      'path': filePath,
     });
     expect(result['type'], equals('FSFile'));
     expect(result['fileContents'], equals(fileContents));
 
     // List all the files in the file system.
     result = await vm.invokeRpcNoUpgrade('_listDevFSFiles', {
-        'fsName': fsId,
+      'fsName': fsId,
     });
     expect(result['type'], equals('FSFileList'));
     expect(result['files'].length, equals(1));
@@ -48,7 +45,7 @@ var tests = [
 
     // Delete DevFS.
     result = await vm.invokeRpcNoUpgrade('_deleteDevFS', {
-        'fsName': fsId,
+      'fsName': fsId,
     });
     expect(result['type'], equals('Success'));
   },