Add a new GetInstance() method for singleton classes used in chrome/browser files.

chrome/browser/crash_handler_host_linux_stub.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.
 
 // This is a stub file which is compiled in when we are building without
 // breakpad support.
 
 #include "chrome/browser/crash_handler_host_linux.h"
 
+#include "base/singleton.h"
+
 CrashHandlerHostLinux::CrashHandlerHostLinux()
     : process_socket_(-1),
       browser_socket_(-1) {
 }
 
 CrashHandlerHostLinux::~CrashHandlerHostLinux() {
 }
 
 void CrashHandlerHostLinux::OnFileCanReadWithoutBlocking(int fd) {
 }
 
 void CrashHandlerHostLinux::OnFileCanWriteWithoutBlocking(int fd) {
 }
 
 void CrashHandlerHostLinux::WillDestroyCurrentMessageLoop() {
 }
 
 PluginCrashHandlerHostLinux::PluginCrashHandlerHostLinux() {
 }
 
 PluginCrashHandlerHostLinux::~PluginCrashHandlerHostLinux() {
 }
 
+// static
+PluginCrashHandlerHostLinux* PluginCrashHandlerHostLinux::GetInstance() {
+  return Singleton<PluginCrashHandlerHostLinux>::get();
+}
+
 RendererCrashHandlerHostLinux::RendererCrashHandlerHostLinux() {
 }
 
 RendererCrashHandlerHostLinux::~RendererCrashHandlerHostLinux() {
 }
+
+// static
+RendererCrashHandlerHostLinux* RendererCrashHandlerHostLinux::GetInstance() {
+  return Singleton<RendererCrashHandlerHostLinux>::get();
+}