Revert of First pass BackgroundTracingManager.

content/public/browser/background_tracing_reactive_config.cc

Index: content/public/browser/background_tracing_reactive_config.cc
diff --git a/content/public/browser/background_tracing_reactive_config.cc b/content/public/browser/background_tracing_reactive_config.cc
deleted file mode 100644
index 03e2ea26852b5623be07be558954a42b596a8c9d..0000000000000000000000000000000000000000
--- a/content/public/browser/background_tracing_reactive_config.cc
+++ /dev/null
@@ -1,16 +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 "content/public/browser/background_tracing_reactive_config.h"
-
-namespace content {
-
-BackgroundTracingReactiveConfig::BackgroundTracingReactiveConfig()
-    : BackgroundTracingConfig(BackgroundTracingConfig::REACTIVE_TRACING_MODE) {
-}
-
-BackgroundTracingReactiveConfig::~BackgroundTracingReactiveConfig() {
-}
-
-}  // namespace content