Run dartfmt on all files under runtime.

runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart

Index: runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart
diff --git a/runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart b/runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart
index 6b5c0d00b641bf5e78e290d6ace5a10a233a2170..dd73082c7eba85d59a9aadae1ead4144d402c06e 100644
--- a/runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart
+++ b/runtime/observatory/tests/observatory_ui/mocks/repositories/sample_profile.dart
@@ -18,20 +18,20 @@ class SampleProfileLoadingProgressMock
   final Duration loadingTime;
   final M.SampleProfile profile;
 
-  const SampleProfileLoadingProgressMock({
-      this.status: M.SampleProfileLoadingStatus.disabled,
+  const SampleProfileLoadingProgressMock(
+      {this.status: M.SampleProfileLoadingStatus.disabled,
       this.progress: 0.0,
       this.fetchingTime: const Duration(),
       this.loadingTime: const Duration(),
-      this.profile
-    });
+      this.profile});
 }
 
-typedef Stream<M.SampleProfileLoadingProgressEvent>
-    ClassSampleProfileRepositoryMockCallback(M.Isolate isolate, M.ClassRef cls,
-        M.SampleProfileTag tag, bool clear);
-typedef Future ClassSampleProfileRepositoryMockToggleCallback(M.Isolate isolate,
-    M.ClassRef cls);
+typedef Stream<
+    M
+        .SampleProfileLoadingProgressEvent> ClassSampleProfileRepositoryMockCallback(
+    M.Isolate isolate, M.ClassRef cls, M.SampleProfileTag tag, bool clear);
+typedef Future ClassSampleProfileRepositoryMockToggleCallback(
+    M.Isolate isolate, M.ClassRef cls);
 
 class ClassSampleProfileRepositoryMock
     implements M.ClassSampleProfileRepository {
@@ -39,8 +39,9 @@ class ClassSampleProfileRepositoryMock
   final ClassSampleProfileRepositoryMockToggleCallback _enable;
   final ClassSampleProfileRepositoryMockToggleCallback _disable;
 
-  Stream<M.SampleProfileLoadingProgressEvent> get(M.Isolate isolate,
-      M.ClassRef cls, M.SampleProfileTag tag, {bool clear: false}) {
+  Stream<M.SampleProfileLoadingProgressEvent> get(
+      M.Isolate isolate, M.ClassRef cls, M.SampleProfileTag tag,
+      {bool clear: false}) {
     if (_get != null) {
       return _get(isolate, cls, tag, clear);
     }
@@ -63,23 +64,25 @@ class ClassSampleProfileRepositoryMock
 
   ClassSampleProfileRepositoryMock(
       {ClassSampleProfileRepositoryMockCallback getter,
-       ClassSampleProfileRepositoryMockToggleCallback enable,
-       ClassSampleProfileRepositoryMockToggleCallback disable})
-    : _get = getter,
-      _enable = enable,
-      _disable = disable;
+      ClassSampleProfileRepositoryMockToggleCallback enable,
+      ClassSampleProfileRepositoryMockToggleCallback disable})
+      : _get = getter,
+        _enable = enable,
+        _disable = disable;
 }
 
-typedef Stream<M.SampleProfileLoadingProgressEvent>
-    IsolateampleProfileRepositoryMockCallback(M.IsolateRef cls,
-        M.SampleProfileTag tag, bool clear, bool forceFetch);
+typedef Stream<
+    M
+        .SampleProfileLoadingProgressEvent> IsolateampleProfileRepositoryMockCallback(
+    M.IsolateRef cls, M.SampleProfileTag tag, bool clear, bool forceFetch);
 
 class IsolateSampleProfileRepositoryMock
     implements M.IsolateSampleProfileRepository {
   final IsolateampleProfileRepositoryMockCallback _get;
 
-  Stream<M.SampleProfileLoadingProgressEvent> get(M.IsolateRef isolate,
-      M.SampleProfileTag tag, {bool clear: false, bool forceFetch: false}) {
+  Stream<M.SampleProfileLoadingProgressEvent> get(
+      M.IsolateRef isolate, M.SampleProfileTag tag,
+      {bool clear: false, bool forceFetch: false}) {
     if (_get != null) {
       return _get(isolate, tag, clear, forceFetch);
     }
@@ -88,5 +91,5 @@ class IsolateSampleProfileRepositoryMock
 
   IsolateSampleProfileRepositoryMock(
       {IsolateampleProfileRepositoryMockCallback getter})
-    : _get = getter;
+      : _get = getter;
 }