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

chrome/browser/policy/cloud/resource_cache.cc

Index: chrome/browser/policy/cloud/resource_cache.cc
diff --git a/chrome/browser/policy/cloud/resource_cache.cc b/chrome/browser/policy/cloud/resource_cache.cc
index 79b553141afbf0e73276e2836936c05a71222e8a..4a9932a8ca04087bf5d061e28f9cc17382b6ee60 100644
--- a/chrome/browser/policy/cloud/resource_cache.cc
+++ b/chrome/browser/policy/cloud/resource_cache.cc
@@ -23,8 +23,8 @@ bool Base64Encode(const std::string& value, std::string* encoded) {
   DCHECK(!value.empty());
   if (value.empty() || !base::Base64Encode(value, encoded))
     return false;
-  ReplaceChars(*encoded, "+", "-", encoded);
-  ReplaceChars(*encoded, "/", "_", encoded);
+  base::ReplaceChars(*encoded, "+", "-", encoded);
+  base::ReplaceChars(*encoded, "/", "_", encoded);
   return true;
 }
 
@@ -49,8 +49,8 @@ bool Base64Encode(const std::set<std::string>& input,
 // emtpy.
 bool Base64Decode(const std::string& encoded, std::string* value) {
   std::string buffer;
-  ReplaceChars(encoded, "-", "+", &buffer);
-  ReplaceChars(buffer, "_", "/", &buffer);
+  base::ReplaceChars(encoded, "-", "+", &buffer);
+  base::ReplaceChars(buffer, "_", "/", &buffer);
   return base::Base64Decode(buffer, value) && !value->empty();
 }