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

chrome/browser/crash_handler_host_linux.h

 // 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.
 
 #ifndef CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 #define CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_
 #pragma once
 
 #include <string>
 
 #include "base/message_loop.h"
 #include "base/scoped_ptr.h"
-#include "base/singleton.h"
+
+template <typename T> struct DefaultSingletonTraits;
 
 namespace base {
 class Thread;
 }
 
 // This is the base class for singleton objects which crash dump renderers and
 // plugins on Linux. We perform the crash dump from the browser because it
 // allows us to be outside the sandbox.
 //
 // PluginCrashHandlerHostLinux and RendererCrashHandlerHostLinux are singletons
@@ skipping 48 matching lines @@
 #if defined(USE_LINUX_BREAKPAD)
   MessageLoopForIO::FileDescriptorWatcher file_descriptor_watcher_;
   scoped_ptr<base::Thread> uploader_thread_;
   bool shutting_down_;
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(CrashHandlerHostLinux);
 };
 
 class PluginCrashHandlerHostLinux : public CrashHandlerHostLinux {
+ public:
+  // Returns the singleton instance.
+  static PluginCrashHandlerHostLinux* GetInstance();
+
  private:
   friend struct DefaultSingletonTraits<PluginCrashHandlerHostLinux>;
   PluginCrashHandlerHostLinux();
   virtual ~PluginCrashHandlerHostLinux();
 
 #if defined(USE_LINUX_BREAKPAD)
   virtual void SetProcessType();
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(PluginCrashHandlerHostLinux);
 };
 
 class RendererCrashHandlerHostLinux : public CrashHandlerHostLinux {
+ public:
+  // Returns the singleton instance.
+  static RendererCrashHandlerHostLinux* GetInstance();
+
  private:
   friend struct DefaultSingletonTraits<RendererCrashHandlerHostLinux>;
   RendererCrashHandlerHostLinux();
   virtual ~RendererCrashHandlerHostLinux();
 
 #if defined(USE_LINUX_BREAKPAD)
   virtual void SetProcessType();
 #endif
 
   DISALLOW_COPY_AND_ASSIGN(RendererCrashHandlerHostLinux);
 };
 
 #endif  // CHROME_BROWSER_CRASH_HANDLER_HOST_LINUX_H_