Move DevTools out of ash and turn it to a component.

components/ui_devtools/devtools_client.cc

 // 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 "components/ui_devtools/devtools_client.h"
 
 #include "components/ui_devtools/devtools_server.h"
 
-namespace ui {
-namespace devtools {
+namespace ui_devtools {
 
 UiDevToolsClient::UiDevToolsClient(const std::string& name,
                                    UiDevToolsServer* server)
     : name_(name),
       connection_id_(kNotConnected),
       dispatcher_(this),
       server_(server) {
   DCHECK(server_);
 }
 
@@ skipping 40 matching lines @@
 void UiDevToolsClient::sendProtocolNotification(
     std::unique_ptr<protocol::Serializable> message) {
   if (connected())
     server_->SendOverWebSocket(connection_id_, message->serialize());
 }
 
 void UiDevToolsClient::flushProtocolNotifications() {
   NOTIMPLEMENTED();
 }
 
-}  // namespace devtools
-}  // namespace ui
+}  // namespace ui_devtools