Move TrimWhitespace to the base namespace.

chrome/tools/convert_dict/hunspell_reader.cc

Index: chrome/tools/convert_dict/hunspell_reader.cc
diff --git a/chrome/tools/convert_dict/hunspell_reader.cc b/chrome/tools/convert_dict/hunspell_reader.cc
index f6ddc794132881a411e7e16612713ae9c9c4c719..6555fb7be3bbd2d18cd6418670e020b381a16d9e 100644
--- a/chrome/tools/convert_dict/hunspell_reader.cc
+++ b/chrome/tools/convert_dict/hunspell_reader.cc
@@ -23,7 +23,7 @@ void TrimLine(std::string* line) {
   // Treat this text as an ASCII text and trim whitespace characters as
   // hunspell does. The returned text is to be converted into UTF-8 text with
   // the encoding defined in an affix file.
-  TrimWhitespace(*line, TRIM_ALL, line);
+  base::TrimWhitespace(*line, base::TRIM_ALL, line);
 }
 
 std::string ReadLine(FILE* file) {