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

dbus/message.cc

Index: dbus/message.cc
diff --git a/dbus/message.cc b/dbus/message.cc
index b52528d9f624ae24ee308ac87040d76d1e7e15bc..918b860090455ca4827741ae6733c9f1590e113d 100644
--- a/dbus/message.cc
+++ b/dbus/message.cc
@@ -172,7 +172,7 @@ std::string Message::ToStringInternal(const std::string& indent,
           output += indent + "string \"" + value + "\"\n";
         } else {
           std::string truncated;
-          TruncateUTF8ToByteSize(value, kTruncateLength, &truncated);
+          base::TruncateUTF8ToByteSize(value, kTruncateLength, &truncated);
           base::StringAppendF(&truncated, "... (%" PRIuS " bytes in total)",
                               value.size());
           output += indent + "string \"" + truncated + "\"\n";