iwyu: Include stringprintf.h where appropriate, part 1.

media/filters/ffmpeg_glue.cc

 // Copyright (c) 2011 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.
 
 #include "media/filters/ffmpeg_glue.h"
 
-#include "base/string_util.h"
+#include "base/logging.h"
+#include "base/stringprintf.h"
 #include "media/base/filters.h"
 #include "media/ffmpeg/ffmpeg_common.h"
 
 namespace media {
 
 static FFmpegURLProtocol* ToProtocol(void* data) {
   return reinterpret_cast<FFmpegURLProtocol*>(data);
 }
 
 // FFmpeg protocol interface.
@@ skipping 156 matching lines @@
     *protocol = NULL;
     return;
   }
   *protocol = iter->second;
 }
 
 std::string FFmpegGlue::GetProtocolKey(FFmpegURLProtocol* protocol) {
   // Use the FFmpegURLProtocol's memory address to generate the unique string.
   // This also has the nice property that adding the same FFmpegURLProtocol
   // reference will not generate duplicate entries.
-  return StringPrintf("%s://%p", kProtocol, static_cast<void*>(protocol));
+  return base::StringPrintf("%s://%p", kProtocol, static_cast<void*>(protocol));
 }
 
 }  // namespace media