base: Fix the TODO in string_util.h

chrome/installer/util/l10n_string_util.cc

Index: chrome/installer/util/l10n_string_util.cc
diff --git a/chrome/installer/util/l10n_string_util.cc b/chrome/installer/util/l10n_string_util.cc
index 8c67e0b4cd19197e9fed8e8c79df4b37628301fb..8a51868d4c39cdbb7fd469b0f4dde60f44e87d05 100644
--- a/chrome/installer/util/l10n_string_util.cc
+++ b/chrome/installer/util/l10n_string_util.cc
@@ -12,6 +12,7 @@
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "chrome/installer/util/language_selector.h"
 
 namespace {
@@ -63,7 +64,7 @@ std::wstring GetLocalizedEulaResource() {
 
   // Spaces and DOS paths must be url encoded.
   std::wstring url_path =
-      StringPrintf(L"res://%ls/#23/%ls", full_exe_path, resource.c_str());
+      base::StringPrintf(L"res://%ls/#23/%ls", full_exe_path, resource.c_str());
 
   // The cast is safe because url_path has limited length
   // (see the definition of full_exe_path and resource).