Move RemoveChars, ReplaceChars, TrimString, and TruncateUTF8ToByteSize to base namespace.

chrome/browser/media_galleries/fileapi/itunes_data_provider.cc

Index: chrome/browser/media_galleries/fileapi/itunes_data_provider.cc
diff --git a/chrome/browser/media_galleries/fileapi/itunes_data_provider.cc b/chrome/browser/media_galleries/fileapi/itunes_data_provider.cc
index 56af6d436d2583055b13e1494747231ec3478dc9..c5ed53bc273d07a8a2e9335deb1c2446181b26ac 100644
--- a/chrome/browser/media_galleries/fileapi/itunes_data_provider.cc
+++ b/chrome/browser/media_galleries/fileapi/itunes_data_provider.cc
@@ -31,7 +31,7 @@ namespace {
 // Colon and slash are not allowed in filenames, replace them with underscore.
 std::string EscapeBadCharacters(const std::string& input) {
   std::string result;
-  ReplaceChars(input, ":/", "_", &result);
+  base::ReplaceChars(input, ":/", "_", &result);
   return result;
 }