Use dartfmt on Observatory code

runtime/observatory/lib/src/models/objects/breakpoint.dart

Index: runtime/observatory/lib/src/models/objects/breakpoint.dart
diff --git a/runtime/observatory/lib/src/models/objects/breakpoint.dart b/runtime/observatory/lib/src/models/objects/breakpoint.dart
index de9e65a821f31f24e46c026a390ae96762a03cf0..28ed56c91e5ff885687aaddc2b04172806233f4e 100644
--- a/runtime/observatory/lib/src/models/objects/breakpoint.dart
+++ b/runtime/observatory/lib/src/models/objects/breakpoint.dart
@@ -7,11 +7,14 @@ part of models;
 abstract class Breakpoint extends Object {
   /// A number identifying this breakpoint to the user.
   int get number;
+
   /// Has this breakpoint been assigned to a specific program location?
   bool get resolved;
+
   /// [optional]Is this a breakpoint that was added synthetically as part of a
   /// step OverAsyncSuspension resume command?
   bool get isSyntheticAsyncContinuation;
+
   /// SourceLocation when breakpoint is resolved, UnresolvedSourceLocation
   /// when a breakpoint is not resolved.
   Location get location;