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

net/tools/gdig/gdig.cc

Index: net/tools/gdig/gdig.cc
diff --git a/net/tools/gdig/gdig.cc b/net/tools/gdig/gdig.cc
index 54f05091c014a46b5e1919bec12e3e63fd4c6a1b..db0704c5a842c9659c1973f4aeadbd981fd30d47 100644
--- a/net/tools/gdig/gdig.cc
+++ b/net/tools/gdig/gdig.cc
@@ -126,7 +126,7 @@ bool LoadReplayLog(const base::FilePath& file_path, ReplayLog* replay_log) {
   // smarter line splitter, but this particular use does not need to target
   // efficiency.
   std::string replay_log_contents;
-  RemoveChars(original_replay_log_contents, "\r", &replay_log_contents);
+  base::RemoveChars(original_replay_log_contents, "\r", &replay_log_contents);
 
   std::vector<std::string> lines;
   base::SplitString(replay_log_contents, '\n', &lines);