Linux: --single-process with GPU acceleration.

chrome/browser/gpu_process_host.cc

 // Copyright (c) 2010 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/gpu_process_host.h"
 
 #include "app/app_switches.h"
 #include "app/resource_bundle.h"
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
@@ skipping 556 matching lines @@
   BrowserChildProcessHost::OnProcessCrashed(exit_code);
 }
 
 bool GpuProcessHost::CanLaunchGpuProcess() const {
   return RenderViewHostDelegateHelper::gpu_enabled();
 }
 
 bool GpuProcessHost::LaunchGpuProcess() {
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
 
-  // TODO(apatrick): This cannot be a UI message pump on Linux because glib is
-  // not thread safe. Changing this to an IO message pump does not completely
-  // resolve the problem, most likely because we're sharing a connection to the
-  // X server with the browser.
-#if !defined(OS_LINUX)
-
   // If the single-process switch is present, just launch the GPU service in a
   // new thread in the browser process.
   if (browser_command_line.HasSwitch(switches::kSingleProcess)) {
     GpuMainThread* thread = new GpuMainThread(channel_id());
 
     base::Thread::Options options;
+#if defined(OS_LINUX)
+    options.message_loop_type = MessageLoop::TYPE_IO;
+#else
     options.message_loop_type = MessageLoop::TYPE_UI;
+#endif
 
     if (!thread->StartWithOptions(options))
       return false;
 
     return true;
   }
-#endif
 
   CommandLine::StringType gpu_launcher =
       browser_command_line.GetSwitchValueNative(switches::kGpuLauncher);
 
   FilePath exe_path = ChildProcessHost::GetChildPath(gpu_launcher.empty());
   if (exe_path.empty())
     return false;
 
   CommandLine* cmd_line = new CommandLine(exe_path);
   cmd_line->AppendSwitchASCII(switches::kProcessType, switches::kGpuProcess);
@@ skipping 46 matching lines @@
   const CommandLine& browser_command_line = *CommandLine::ForCurrentProcess();
   if (browser_command_line.HasSwitch(switches::kIgnoreGpuBlacklist) ||
       blacklist->LoadGpuBlacklist(gpu_blacklist_json.as_string(), true)) {
     gpu_blacklist_.reset(blacklist);
     return true;
   }
   delete blacklist;
   return false;
 }