Eliminate ash::internal namespace

ash/display/projecting_observer_chromeos.cc

 // 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 "ash/display/projecting_observer_chromeos.h"
 
 #include "chromeos/dbus/dbus_thread_manager.h"
 #include "chromeos/dbus/power_manager_client.h"
 #include "ui/display/chromeos/display_snapshot.h"
 
 namespace ash {
 
-namespace internal {
-
 ProjectingObserver::ProjectingObserver()
     : has_internal_output_(false),
       output_count_(0),
       casting_session_count_(0) {}
 
 ProjectingObserver::~ProjectingObserver() {}
 
 void ProjectingObserver::OnDisplayModeChanged(
     const ui::OutputConfigurator::DisplayStateList& outputs) {
   has_internal_output_ = false;
@@ skipping 25 matching lines @@
 void ProjectingObserver::SetIsProjecting() {
   // "Projecting" is defined as having more than 1 output connected while at
   // least one of them is an internal output.
   bool projecting = has_internal_output_ &&
       (output_count_ + casting_session_count_ > 1);
 
   chromeos::DBusThreadManager::Get()->GetPowerManagerClient()->SetIsProjecting(
       projecting);
 }
 
-}  // namespace internal
-
 }  // namespace ash