Add a new GetInstance() method for remaining files with singleton classes under chrome/browser.

chrome/browser/chromeos/usb_mount_observer.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/chromeos/usb_mount_observer.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/dom_ui/filebrowse_ui.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_list.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/url_constants.h"
 
 namespace chromeos {
 
 const char* kFilebrowseURLHash = "chrome://filebrowse#";
 const char* kFilebrowseScanning = "scanningdevice";
 const int kPopupLeft = 0;
 const int kPopupTop = 0;
 const int kPopupWidth = 250;
 const int kPopupHeight = 300;
 
+// static
+USBMountObserver* USBMountObserver::Get() {
+  return Singleton<USBMountObserver>::get();
+}
+
 void USBMountObserver::Observe(NotificationType type,
                                const NotificationSource& source,
                                const NotificationDetails& details) {
   DCHECK(type == NotificationType::BROWSER_CLOSED);
   for (BrowserIterator i = browsers_.begin(); i != browsers_.end();
        ++i) {
     if (Source<Browser>(source).ptr() == i->browser) {
       i->browser = NULL;
       registrar_.Remove(this,
                         NotificationType::BROWSER_CLOSED,
@@ skipping 153 matching lines @@
     }
   }
   for (size_t x = 0; x < close_these.size(); x++) {
     if (close_these[x]->window()) {
       close_these[x]->window()->Close();
     }
   }
 }
 
 } // namespace chromeos