Run dartfmt on all files under runtime.

runtime/observatory/tests/observatory_ui/mocks/objects/function.dart

Index: runtime/observatory/tests/observatory_ui/mocks/objects/function.dart
diff --git a/runtime/observatory/tests/observatory_ui/mocks/objects/function.dart b/runtime/observatory/tests/observatory_ui/mocks/objects/function.dart
index d017211f122d58c8d58ac017ed1b8e82aa17e264..7733e1d1fe28c7330dadc6d50331733200ce85e5 100644
--- a/runtime/observatory/tests/observatory_ui/mocks/objects/function.dart
+++ b/runtime/observatory/tests/observatory_ui/mocks/objects/function.dart
@@ -12,8 +12,13 @@ class FunctionRefMock implements M.FunctionRef {
   final bool isConst;
   final M.FunctionKind kind;
 
-  const FunctionRefMock({this.id, this.name, this.dartOwner,
-      this.isStatic : false, this.isConst : false, this.kind});
+  const FunctionRefMock(
+      {this.id,
+      this.name,
+      this.dartOwner,
+      this.isStatic: false,
+      this.isConst: false,
+      this.kind});
 }
 
 class FunctionMock implements M.Function {
@@ -38,11 +43,27 @@ class FunctionMock implements M.Function {
   final bool isRecognized;
   final bool isNative;
   final String vmName;
-  const FunctionMock({this.id, this.name, this.clazz, this.size, this.dartOwner,
-      this.isStatic : false, this.isConst : false, this.kind, this.location,
-      this.code, this.unoptimizedCode, this.field, this.usageCounter: 0,
-      this.icDataArray: const InstanceRefMock(), this.deoptimizations: 0,
-      this.isOptimizable: false, this.isInlinable: false,
-      this.hasIntrinsic: false, this.isRecognized: false, this.isNative: false,
-      this.vmName: 'function-vm-name',});
+  const FunctionMock({
+    this.id,
+    this.name,
+    this.clazz,
+    this.size,
+    this.dartOwner,
+    this.isStatic: false,
+    this.isConst: false,
+    this.kind,
+    this.location,
+    this.code,
+    this.unoptimizedCode,
+    this.field,
+    this.usageCounter: 0,
+    this.icDataArray: const InstanceRefMock(),
+    this.deoptimizations: 0,
+    this.isOptimizable: false,
+    this.isInlinable: false,
+    this.hasIntrinsic: false,
+    this.isRecognized: false,
+    this.isNative: false,
+    this.vmName: 'function-vm-name',
+  });
 }