webkit: Append base:: in the StringPrintf calls.

webkit/glue/cpp_variant.cc

Index: webkit/glue/cpp_variant.cc
diff --git a/webkit/glue/cpp_variant.cc b/webkit/glue/cpp_variant.cc
index bf995fc476a53843c7860c00acfb91dbbb3a891a..8545bc1a7ee8708d6dbf144afd3f1e2ed89d9ed5 100644
--- a/webkit/glue/cpp_variant.cc
+++ b/webkit/glue/cpp_variant.cc
@@ -9,6 +9,7 @@
 #include "webkit/glue/cpp_variant.h"
 #include "base/logging.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 
 using WebKit::WebBindings;
@@ -232,7 +233,7 @@ std::vector<std::wstring> CppVariant::ToStringVector() const {
       length = std::min(60000, length);
       for (int i = 0; i < length; ++i) {
         // Get each of the items.
-        std::string index = StringPrintf("%d", i);
+        std::string index = base::StringPrintf("%d", i);
         NPIdentifier index_id = WebBindings::getStringIdentifier(index.c_str());
         if (WebBindings::hasProperty(NULL, np_value, index_id)) {
           NPVariant index_value;