Restart in Desktop if Metro tries to start up without GPU

chrome/browser/metro_viewer/chrome_metro_viewer_process_host_aurawin.cc

 // Copyright 2012 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/metro_viewer/chrome_metro_viewer_process_host_aurawin.h"
 
 #include "ash/shell.h"
 #include "base/logging.h"
 #include "base/memory/ref_counted.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_process_platform_part_aurawin.h"
 #include "chrome/browser/chrome_notification_types.h"
+#include "chrome/browser/lifetime/application_lifetime.h"
 #include "chrome/browser/profiles/profile_manager.h"
 #include "chrome/browser/search_engines/util.h"
 #include "chrome/browser/ui/ash/ash_init.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_navigator.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/host_desktop.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/env_vars.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/gpu_data_manager.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/page_navigator.h"
 #include "content/public/browser/web_contents.h"
 #include "ui/aura/remote_root_window_host_win.h"
 #include "ui/surface/accelerated_surface_win.h"
 #include "url/gurl.h"
 
 namespace {
 
 void CloseOpenAshBrowsers() {
@@ skipping 53 matching lines @@
   // This will delete the MetroViewerProcessHost object. Don't access member
   // variables/functions after this call.
   g_browser_process->platform_part()->OnMetroViewerProcessTerminated();
 }
 
 void ChromeMetroViewerProcessHost::OnChannelConnected(int32 /*peer_pid*/) {
   DLOG(INFO) << "ChromeMetroViewerProcessHost::OnChannelConnected: ";
   // Set environment variable to let breakpad know that metro process was
   // connected.
   ::SetEnvironmentVariableA(env_vars::kMetroConnected, "1");
+
+  if (!content::GpuDataManager::GetInstance()->GpuAccessAllowed(NULL)) {
+    DLOG(INFO) << "No GPU access, attempting to restart in Desktop\n";
+    chrome::AttemptRestartToDesktopMode();
+  }
 }
 
 void ChromeMetroViewerProcessHost::OnSetTargetSurface(
     gfx::NativeViewId target_surface) {
   HWND hwnd = reinterpret_cast<HWND>(target_surface);
   // Tell our root window host that the viewer has connected.
   aura::RemoteRootWindowHostWin::Instance()->Connected(this, hwnd);
   // Now start the Ash shell environment.
   chrome::OpenAsh();
   ash::Shell::GetInstance()->CreateLauncher();
   ash::Shell::GetInstance()->ShowLauncher();
   // Tell the rest of Chrome that Ash is running.
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_ASH_SESSION_STARTED,
       content::NotificationService::AllSources(),
       content::NotificationService::NoDetails());
 }
 
 void ChromeMetroViewerProcessHost::OnOpenURL(const string16& url) {
   OpenURL(GURL(url));
 }
 
 void ChromeMetroViewerProcessHost::OnHandleSearchRequest(
     const string16& search_string) {
   GURL url(GetDefaultSearchURLForSearchTerms(
       ProfileManager::GetDefaultProfileOrOffTheRecord(), search_string));
   if (url.is_valid())
     OpenURL(url);
 }