Move StringToUpperASCII to base namespace

media/base/mime_util.cc

Index: media/base/mime_util.cc
diff --git a/media/base/mime_util.cc b/media/base/mime_util.cc
index bc12773ca7bd1b16d041ce0c29d67b5f0283cec0..030a4ee1a646a08926a5b6e1adb4c5dd00418301 100644
--- a/media/base/mime_util.cc
+++ b/media/base/mime_util.cc
@@ -544,7 +544,7 @@ static bool ParseH264CodecID(const std::string& codec_id,
     return false;
   }
 
-  std::string profile = StringToUpperASCII(codec_id.substr(5, 4));
+  std::string profile = base::StringToUpperASCII(codec_id.substr(5, 4));
   if (IsValidH264BaselineProfile(profile)) {
     *codec = MimeUtil::H264_BASELINE;
   } else if (profile == "4D40") {
@@ -557,7 +557,8 @@ static bool ParseH264CodecID(const std::string& codec_id,
     return true;
   }
 
-  *is_ambiguous = !IsValidH264Level(StringToUpperASCII(codec_id.substr(9)));
+  *is_ambiguous =
+      !IsValidH264Level(base::StringToUpperASCII(codec_id.substr(9)));
   return true;
 }