diff --git a/sky/engine/bindings/dart_ui.cc b/sky/engine/bindings/dart_ui.cc
index e113ef746fdf8e58a96b9e7eb78984eba7a8fc59..429589dc449ea1c247ba8484231119b86d1dfa96 100644
--- a/sky/engine/bindings/dart_ui.cc
+++ b/sky/engine/bindings/dart_ui.cc
@@ -7,6 +7,7 @@
 #include "gen/sky/bindings/DartGlobal.h"
 #include "sky/engine/bindings/dart_runtime_hooks.h"
 #include "sky/engine/core/painting/painting.h"
+#include "sky/engine/core/tracing/tracing.h"
 #include "sky/engine/core/window/window.h"
 #include "sky/engine/tonic/dart_converter.h"
 #include "sky/engine/tonic/dart_error.h"
@@ -40,6 +41,7 @@ void DartUI::InitForIsolate() {
     DartRuntimeHooks::RegisterNatives(g_natives);
     Window::RegisterNatives(g_natives);
     Painting::RegisterNatives(g_natives);
+    Tracing::RegisterNatives(g_natives);
   }
 
   DART_CHECK_VALID(Dart_SetNativeResolver(
diff --git a/sky/engine/core/core.gni b/sky/engine/core/core.gni
index bc409ee49c7264e5d613546fbcfa312cec7eb0a0..47c76cafbd1072eba99164f1cfcfe71e87e37a9d 100644
--- a/sky/engine/core/core.gni
+++ b/sky/engine/core/core.gni
@@ -244,8 +244,8 @@ sky_core_files = [
   "text/Paragraph.h",
   "text/ParagraphBuilder.cpp",
   "text/ParagraphBuilder.h",
-  "view/Tracing.cpp",
-  "view/Tracing.h",
+  "tracing/tracing.cc",
+  "tracing/tracing.h",
   "window/window.cc",
   "window/window.h",
 ]
@@ -275,7 +275,6 @@ core_idl_files = get_path_info([
                                  "painting/Shader.idl",
                                  "text/Paragraph.idl",
                                  "text/ParagraphBuilder.idl",
-                                 "view/Tracing.idl",
                                ],
                                "abspath")
 
@@ -285,6 +284,7 @@ core_dart_files = get_path_info([
                                   "dart/lerp.dart",
                                   "dart/painting.dart",
                                   "dart/text.dart",
+                                  "dart/tracing.dart",
                                   "dart/window.dart",
                                   "painting/Color.dart",
                                   "painting/ColorFilter.dart",
diff --git a/sky/engine/core/dart/tracing.dart b/sky/engine/core/dart/tracing.dart
new file mode 100644
index 0000000000000000000000000000000000000000..983c79c6f87f842990387d62d1152bf67bc8b2df
--- /dev/null
+++ b/sky/engine/core/dart/tracing.dart
@@ -0,0 +1,12 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+part of dart_ui;
+
+class _Tracing {
+  void begin(String name) native "Tracing_begin";
+  void end(String name) native "Tracing_end";
+}
+
+final _Tracing tracing = new _Tracing();
diff --git a/sky/engine/core/dart/window.dart b/sky/engine/core/dart/window.dart
index b6e52d48662352b5365f16b10e7a70f7c33d06f0..5d42f1aaf30903c2db8aeccdb64e73407dde5641 100644
--- a/sky/engine/core/dart/window.dart
+++ b/sky/engine/core/dart/window.dart
@@ -38,4 +38,3 @@ class Window {
 }
 
 final Window window = new Window._();
-final Tracing tracing = new Tracing();
diff --git a/sky/engine/core/tracing/tracing.cc b/sky/engine/core/tracing/tracing.cc
new file mode 100644
index 0000000000000000000000000000000000000000..0e2da075a30bbb056821bf3d7d04093ad44ade94
--- /dev/null
+++ b/sky/engine/core/tracing/tracing.cc
@@ -0,0 +1,52 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "sky/engine/core/tracing/tracing.h"
+
+#include "base/trace_event/trace_event.h"
+#include "sky/engine/tonic/dart_converter.h"
+#include "sky/engine/wtf/text/StringUTF8Adaptor.h"
+
+namespace blink {
+
+namespace {
+
+void BeginTracing(Dart_NativeArguments args) {
+  Dart_Handle exception = nullptr;
+  String name = DartConverter<String>::FromArguments(args, 1, exception);
+  if (exception) {
+    Dart_ThrowException(exception);
+    return;
+  }
+
+  StringUTF8Adaptor utf8(name);
+  // TRACE_EVENT_COPY_BEGIN0 needs a c-style null-terminated string.
+  CString cstring(utf8.data(), utf8.length());
+  TRACE_EVENT_COPY_BEGIN0("script", cstring.data());
+}
+
+void EndTracing(Dart_NativeArguments args) {
+  Dart_Handle exception = nullptr;
+  String name = DartConverter<String>::FromArguments(args, 1, exception);
+  if (exception) {
+    Dart_ThrowException(exception);
+    return;
+  }
+
+  StringUTF8Adaptor utf8(name);
+  // TRACE_EVENT_COPY_END0 needs a c-style null-terminated string.
+  CString cstring(utf8.data(), utf8.length());
+  TRACE_EVENT_COPY_END0("script", cstring.data());
+}
+
+}  // namespace
+
+void Tracing::RegisterNatives(DartLibraryNatives* natives) {
+  natives->Register({
+    { "Tracing_begin", BeginTracing, 2, true },
+    { "Tracing_end", EndTracing, 2, true },
+  });
+}
+
+}  // namespace blink
diff --git a/sky/engine/core/tracing/tracing.h b/sky/engine/core/tracing/tracing.h
new file mode 100644
index 0000000000000000000000000000000000000000..b50db9f5578e073e5102e0acdf1916aa71df6a91
--- /dev/null
+++ b/sky/engine/core/tracing/tracing.h
@@ -0,0 +1,19 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef SKY_ENGINE_CORE_TRACING_TRACING_H_
+#define SKY_ENGINE_CORE_TRACING_TRACING_H_
+
+#include "sky/engine/tonic/dart_library_natives.h"
+
+namespace blink {
+
+class Tracing {
+ public:
+   static void RegisterNatives(DartLibraryNatives* natives);
+};
+
+}  // namespace blink
+
+#endif  // SKY_ENGINE_CORE_TRACING_TRACING_H_
diff --git a/sky/engine/core/view/Tracing.cpp b/sky/engine/core/view/Tracing.cpp
deleted file mode 100644
index b64847276684967f23aa1ea2e9a57b38fb7cffa4..0000000000000000000000000000000000000000
--- a/sky/engine/core/view/Tracing.cpp
+++ /dev/null
@@ -1,36 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "sky/engine/core/view/Tracing.h"
-
-#include "base/trace_event/trace_event.h"
-#include "sky/engine/wtf/text/StringUTF8Adaptor.h"
-
-namespace blink {
-
-Tracing::Tracing()
-{
-}
-
-Tracing::~Tracing()
-{
-}
-
-void Tracing::begin(const String& name)
-{
-    StringUTF8Adaptor utf8(name);
-    // TRACE_EVENT_COPY_BEGIN0 needs a c-style null-terminated string.
-    CString cstring(utf8.data(), utf8.length());
-    TRACE_EVENT_COPY_BEGIN0("script", cstring.data());
-}
-
-void Tracing::end(const String& name)
-{
-    StringUTF8Adaptor utf8(name);
-    // TRACE_EVENT_COPY_END0 needs a c-style null-terminated string.
-    CString cstring(utf8.data(), utf8.length());
-    TRACE_EVENT_COPY_END0("script", cstring.data());
-}
-
-} // namespace blink
diff --git a/sky/engine/core/view/Tracing.h b/sky/engine/core/view/Tracing.h
deleted file mode 100644
index d7acc25b27baa35da9d700dfd28532f24290f2e2..0000000000000000000000000000000000000000
--- a/sky/engine/core/view/Tracing.h
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#ifndef SKY_ENGINE_CORE_VIEW_TRACING_H_
-#define SKY_ENGINE_CORE_VIEW_TRACING_H_
-
-#include "sky/engine/tonic/dart_wrappable.h"
-#include "sky/engine/wtf/PassRefPtr.h"
-#include "sky/engine/wtf/RefCounted.h"
-#include "sky/engine/wtf/text/WTFString.h"
-
-namespace blink {
-
-class Tracing : public RefCounted<Tracing>, public DartWrappable {
-    DEFINE_WRAPPERTYPEINFO();
-public:
-    ~Tracing() override;
-    static PassRefPtr<Tracing> create() { return adoptRef(new Tracing); }
-
-    void begin(const String& name);
-    void end(const String& name);
-
-private:
-    Tracing();
-};
-
-} // namespace blink
-
-#endif  // SKY_ENGINE_CORE_VIEW_TRACING_H_
diff --git a/sky/engine/core/view/Tracing.idl b/sky/engine/core/view/Tracing.idl
deleted file mode 100644
index 1e2a417db5525091c215bb61fe11b79786bbbc28..0000000000000000000000000000000000000000
--- a/sky/engine/core/view/Tracing.idl
+++ /dev/null
@@ -1,10 +0,0 @@
-// Copyright 2015 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-[
-    Constructor()
-] interface Tracing {
-  void begin(DOMString name);
-  void end(DOMString name);
-};