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

chrome/browser/ui/tab_contents/tab_contents_wrapper.cc

Index: chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
diff --git a/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc b/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
index 0adec3284b04d067c2b5b59ba0661fe63073e411..b44c3464585f8c5333feb353e963f470673c3171 100644
--- a/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
+++ b/chrome/browser/ui/tab_contents/tab_contents_wrapper.cc
@@ -4,11 +4,14 @@
 
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 
-#include "base/singleton.h"
+#include "base/lazy_instance.h"
 #include "chrome/browser/password_manager/password_manager.h"
 #include "chrome/browser/password_manager_delegate_impl.h"
 #include "chrome/browser/tab_contents/tab_contents.h"
 
+static base::LazyInstance<PropertyAccessor<TabContentsWrapper*> >
+    g_tab_contents_wrapper_property_accessor(base::LINKER_INITIALIZED);
+
 ////////////////////////////////////////////////////////////////////////////////
 // TabContentsWrapper, public:
 
@@ -29,7 +32,7 @@ TabContentsWrapper::~TabContentsWrapper() {
 }
 
 PropertyAccessor<TabContentsWrapper*>* TabContentsWrapper::property_accessor() {
-  return Singleton< PropertyAccessor<TabContentsWrapper*> >::get();
+  return g_tab_contents_wrapper_property_accessor.Pointer();
 }
 
 TabContentsWrapper* TabContentsWrapper::Clone() {