Fix tab backgrounding on Linux / ChromeOS

base/process_posix.cc

Index: base/process_posix.cc
diff --git a/base/process_posix.cc b/base/process_posix.cc
index 6e65ebfd6cf45ec8b966e3c70418f6729afe3fed..20e623c3fdd9ba7ee153b90595202c2edd58adeb 100644
--- a/base/process_posix.cc
+++ b/base/process_posix.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2008 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -57,6 +57,12 @@ bool Process::SetProcessBackgrounded(bool value) {
   // priority.
   return false;
 }
+
+// static
+bool Process::CanBackgroundProcesses() {
+  return false;
+}
+
 #endif
 
 int Process::GetPriority() const {