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

chrome/browser/chromeos/dom_ui/imageburner_ui.cc

Index: chrome/browser/chromeos/dom_ui/imageburner_ui.cc
diff --git a/chrome/browser/chromeos/dom_ui/imageburner_ui.cc b/chrome/browser/chromeos/dom_ui/imageburner_ui.cc
index c28516309a97ab495e4c56fd1850a72018c57c40..75d8b40fb9503fc677c6f5041b92feeb5416b645 100644
--- a/chrome/browser/chromeos/dom_ui/imageburner_ui.cc
+++ b/chrome/browser/chromeos/dom_ui/imageburner_ui.cc
@@ -105,7 +105,7 @@ ImageBurnHandler::ImageBurnHandler(TabContents* contents)
           chromeos::CrosLibrary::Get()->GetBurnLibrary();
   burn_lib->AddObserver(this);
   local_image_file_path_.clear();
-  burn_resource_manager_ = Singleton<ImageBurnResourceManager>::get();
+  burn_resource_manager_ = ImageBurnResourceManager::GetInstance();
 }
 
 ImageBurnHandler::~ImageBurnHandler() {
@@ -398,7 +398,7 @@ void ImageBurnHandler::CreateLocalImagePath() {
 ImageBurnTaskProxy::ImageBurnTaskProxy(
                         const base::WeakPtr<ImageBurnHandler>& handler)
                             : handler_(handler) {
-  resource_manager_ = Singleton<ImageBurnResourceManager>::get();
+  resource_manager_ = ImageBurnResourceManager::GetInstance();
 }
 
 bool ImageBurnTaskProxy::ReportDownloadInitialized() {
@@ -464,6 +464,11 @@ ImageBurnResourceManager::~ImageBurnResourceManager() {
     download_manager_->RemoveObserver(this);
 }
 
+// static
+ImageBurnResourceManager* ImageBurnResourceManager::GetInstance() {
+  return Singleton<ImageBurnResourceManager>::get();
+}
+
 void ImageBurnResourceManager::OnDownloadUpdated(DownloadItem* download) {
   if (download->state() == DownloadItem::CANCELLED) {
     image_url_.reset();