Introduce a layering in the invalidation component as public and impl

components/invalidation/ticl_settings_provider.cc

Index: components/invalidation/ticl_settings_provider.cc
diff --git a/components/invalidation/ticl_settings_provider.cc b/components/invalidation/ticl_settings_provider.cc
deleted file mode 100644
index dfe5dd0b519368f9eebb11425dde5a8a42bc34ef..0000000000000000000000000000000000000000
--- a/components/invalidation/ticl_settings_provider.cc
+++ /dev/null
@@ -1,30 +0,0 @@
-// Copyright 2014 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 "components/invalidation/ticl_settings_provider.h"
-
-namespace invalidation {
-
-TiclSettingsProvider::Observer::~Observer() {
-}
-
-TiclSettingsProvider::TiclSettingsProvider() {
-}
-
-TiclSettingsProvider::~TiclSettingsProvider() {
-}
-
-void TiclSettingsProvider::AddObserver(Observer* observer) {
-  observers_.AddObserver(observer);
-}
-
-void TiclSettingsProvider::RemoveObserver(Observer* observer) {
-  observers_.RemoveObserver(observer);
-}
-
-void TiclSettingsProvider::FireOnUseGCMChannelChanged() {
-  FOR_EACH_OBSERVER(Observer, observers_, OnUseGCMChannelChanged());
-}
-
-}  // namespace invalidation