Rename tracing interfaces.

mojo/common/dart/lib/trace_controller_impl.dart

Index: mojo/common/dart/lib/trace_controller_impl.dart
diff --git a/mojo/common/dart/lib/trace_controller_impl.dart b/mojo/common/dart/lib/trace_controller_impl.dart
deleted file mode 100644
index b56b4e25e2ffa08a3ea3a0e173608559e51bfee2..0000000000000000000000000000000000000000
--- a/mojo/common/dart/lib/trace_controller_impl.dart
+++ /dev/null
@@ -1,46 +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.
-
-import 'dart:async';
-
-import 'package:mojo/application.dart';
-import 'package:mojo/bindings.dart';
-import 'package:mojo/core.dart';
-import 'package:mojo_services/tracing/tracing.mojom.dart';
-
-class TraceControllerImpl implements TraceController {
-  TraceControllerStub _stub;
-  TraceDataCollectorProxy _collector;
-  // TODO(rudominer) We currently ignore _categories.
-  String _categories;
-
-  TraceControllerImpl.fromEndpoint(MojoMessagePipeEndpoint e) {
-    _stub = TraceControllerStub.newFromEndpoint(e);
-    _stub.impl = this;
-  }
-
-  @override
-  void startTracing(String categories, TraceDataCollectorProxy collector) {
-    assert(_collector == null);
-    _collector = collector;
-    _categories = categories;
-  }
-
-  @override
-  void stopTracing() {
-    assert(_collector != null);
-    _collector.close();
-    _collector = null;
-  }
-
-  bool isActive() {
-    return _collector != null;
-  }
-
-  void sendTraceMessage(String message) {
-    if (_collector != null) {
-      _collector.ptr.dataCollected(message);
-    }
-  }
-}