cc: Break up with FakeLayerTreeHostClient.

cc/test/stub_layer_tree_host_single_thread_client.cc

Index: cc/test/stub_layer_tree_host_single_thread_client.cc
diff --git a/cc/test/stub_layer_tree_host_single_thread_client.cc b/cc/test/stub_layer_tree_host_single_thread_client.cc
new file mode 100644
index 0000000000000000000000000000000000000000..028e738f698dfb3443bce5ec9c514e2b44e3fd5b
--- /dev/null
+++ b/cc/test/stub_layer_tree_host_single_thread_client.cc
@@ -0,0 +1,12 @@
+// Copyright 2016 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 "cc/test/stub_layer_tree_host_single_thread_client.h"
+
+namespace cc {
+
+StubLayerTreeHostSingleThreadClient::~StubLayerTreeHostSingleThreadClient() =
+    default;
+
+}  // namespace cc