webkit: Append base:: in the StringPrintf calls.

webkit/glue/plugins/webplugin_impl.cc

Index: webkit/glue/plugins/webplugin_impl.cc
diff --git a/webkit/glue/plugins/webplugin_impl.cc b/webkit/glue/plugins/webplugin_impl.cc
index 9e90e5b20208c80a7f9cd2c4d67971aeb7b2494d..80bc197fdd768a4eb72b806e3b24b4ae8d591784 100644
--- a/webkit/glue/plugins/webplugin_impl.cc
+++ b/webkit/glue/plugins/webplugin_impl.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/utf_string_conversions.h"
 #include "gfx/rect.h"
 #include "googleurl/src/gurl.h"
@@ -160,7 +161,7 @@ std::string GetAllHeaders(const WebURLResponse& response) {
     return result;
 
   // TODO(darin): Shouldn't we also report HTTP version numbers?
-  result = StringPrintf("HTTP %d ", response.httpStatusCode());
+  result = base::StringPrintf("HTTP %d ", response.httpStatusCode());
   result.append(status.utf8());
   result.append("\n");