Update uses of UTF conversions in content/ to use the base:: namespace.

content/browser/download/drag_download_util.cc

Index: content/browser/download/drag_download_util.cc
diff --git a/content/browser/download/drag_download_util.cc b/content/browser/download/drag_download_util.cc
index 0850c3ba0816146d8f15746e94a9400613a904d0..7a22662e146b34371536fee2125eafc8fd95a235 100644
--- a/content/browser/download/drag_download_util.cc
+++ b/content/browser/download/drag_download_util.cc
@@ -49,7 +49,7 @@ bool ParseDownloadMetadata(const base::string16& metadata,
 #if defined(OS_WIN)
     *file_name = base::FilePath(file_name_str);
 #else
-    *file_name = base::FilePath(UTF16ToUTF8(file_name_str));
+    *file_name = base::FilePath(base::UTF16ToUTF8(file_name_str));
 #endif
   }
   if (url)
@@ -70,7 +70,8 @@ FileStream* CreateFileStreamForDrop(base::FilePath* file_path,
       new_file_path = *file_path;
     } else {
 #if defined(OS_WIN)
-      base::string16 suffix = ASCIIToUTF16("-") + base::IntToString16(seq);
+      base::string16 suffix =
+          base::ASCIIToUTF16("-") + base::IntToString16(seq);
 #else
       std::string suffix = std::string("-") + base::IntToString(seq);
 #endif