webkit: Append base:: in the StringPrintf calls.

webkit/glue/plugins/webplugin_delegate_impl_win.cc

Index: webkit/glue/plugins/webplugin_delegate_impl_win.cc
diff --git a/webkit/glue/plugins/webplugin_delegate_impl_win.cc b/webkit/glue/plugins/webplugin_delegate_impl_win.cc
index 3289a2969651221d9a27f56313d3c8656fbd518c..9cdc7dbedd0f338a5f8e8127b860b5bc821abceb 100644
--- a/webkit/glue/plugins/webplugin_delegate_impl_win.cc
+++ b/webkit/glue/plugins/webplugin_delegate_impl_win.cc
@@ -18,6 +18,7 @@
 #include "base/string_number_conversions.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/win_util.h"
 #include "skia/ext/platform_canvas.h"
 #include "third_party/WebKit/WebKit/chromium/public/WebInputEvent.h"
@@ -1195,7 +1196,7 @@ bool WebPluginDelegateImpl::PlatformHandleInputEvent(
       parent_thread_id_ = GetWindowThreadProcessId(parent_, NULL);
     HKL parent_layout = GetKeyboardLayout(parent_thread_id_);
     if (keyboard_layout_ != parent_layout) {
-      std::wstring layout_name(StringPrintf(L"%08x", parent_layout));
+      std::wstring layout_name(base::StringPrintf(L"%08x", parent_layout));
       LoadKeyboardLayout(layout_name.c_str(), KLF_ACTIVATE);
       keyboard_layout_ = parent_layout;
     }