base: Remove 'using' declaration of StringAppendV.

skia/ext/google_logging.cc

Index: skia/ext/google_logging.cc
diff --git a/skia/ext/google_logging.cc b/skia/ext/google_logging.cc
index 72328b8b50faa23d459fa6f4bab6914b561be6c1..df55c2ae145fa3755f6bee34fdd5c267ae15b77c 100644
--- a/skia/ext/google_logging.cc
+++ b/skia/ext/google_logging.cc
@@ -1,4 +1,4 @@
-// Copyright (c) 2009 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -15,7 +15,7 @@ void SkDebugf_FileLine(const char* file, int line, bool fatal,
   va_start(ap, format);
 
   std::string msg;
-  StringAppendV(&msg, format, ap);
+  base::StringAppendV(&msg, format, ap);
 
   logging::LogMessage(file, line,
                       fatal ? logging::LOG_FATAL : logging::LOG_INFO).stream()