Revert of Remove remote tree host and some related input and metro_driver code

chrome/browser/browser_process_platform_part_aurawin.cc

Index: chrome/browser/browser_process_platform_part_aurawin.cc
diff --git a/chrome/browser/browser_process_platform_part_aurawin.cc b/chrome/browser/browser_process_platform_part_aurawin.cc
new file mode 100644
index 0000000000000000000000000000000000000000..dd6635bf2edbd7685dc1faeda9628d86539c2bcd
--- /dev/null
+++ b/chrome/browser/browser_process_platform_part_aurawin.cc
@@ -0,0 +1,72 @@
+// Copyright (c) 2013 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 "chrome/browser/browser_process_platform_part_aurawin.h"
+
+#include "base/command_line.h"
+#include "base/logging.h"
+#include "base/prefs/pref_service.h"
+#include "base/process/kill.h"
+#include "base/win/windows_version.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/first_run/upgrade_util.h"
+#include "chrome/browser/first_run/upgrade_util_win.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
+#include "chrome/browser/metro_viewer/chrome_metro_viewer_process_host_aurawin.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/common/pref_names.h"
+#include "content/public/browser/notification_service.h"
+
+#include "ui/aura/remote_window_tree_host_win.h"
+#include "ui/base/ui_base_switches.h"
+
+BrowserProcessPlatformPart::BrowserProcessPlatformPart() {
+  if (base::win::GetVersion() >= base::win::VERSION_WIN7) {
+    // Tell metro viewer to close when we are shutting down.
+    registrar_.Add(this, chrome::NOTIFICATION_APP_TERMINATING,
+                   content::NotificationService::AllSources());
+  }
+}
+
+BrowserProcessPlatformPart::~BrowserProcessPlatformPart() {
+}
+
+void BrowserProcessPlatformPart::OnMetroViewerProcessTerminated() {
+  metro_viewer_process_host_.reset(NULL);
+}
+
+void BrowserProcessPlatformPart::PlatformSpecificCommandLineProcessing(
+    const base::CommandLine& command_line) {
+  // Check for Windows 8 specific commandlines requesting that this process
+  // either connect to an existing viewer or launch a new viewer and
+  // synchronously wait for it to connect.
+
+  bool launch = command_line.HasSwitch(switches::kViewerLaunchViaAppId);
+  bool connect = (launch ||
+                  (command_line.HasSwitch(switches::kViewerConnect) &&
+                   !metro_viewer_process_host_.get()));
+  if (!connect)
+    return;
+  // Create a host to connect to the Metro viewer process over IPC.
+  metro_viewer_process_host_.reset(new ChromeMetroViewerProcessHost());
+  if (launch) {
+    CHECK(metro_viewer_process_host_->LaunchViewerAndWaitForConnection(
+        command_line.GetSwitchValueNative(
+            switches::kViewerLaunchViaAppId)));
+  }
+}
+
+void BrowserProcessPlatformPart::Observe(
+    int type,
+    const content::NotificationSource& source,
+    const content::NotificationDetails& details) {
+
+  DCHECK(type == chrome::NOTIFICATION_APP_TERMINATING);
+  PrefService* pref_service = g_browser_process->local_state();
+  bool is_relaunch = pref_service->GetBoolean(prefs::kWasRestarted);
+  if (is_relaunch) {
+    // TODO(scottmg): A lot of this can be removed http://crbug.com/558054.
+  }
+}