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

device/bluetooth/bluetooth_profile_chromeos.cc

Index: device/bluetooth/bluetooth_profile_chromeos.cc
diff --git a/device/bluetooth/bluetooth_profile_chromeos.cc b/device/bluetooth/bluetooth_profile_chromeos.cc
index ba6bd5c3d10a0efa82634e267c838eb7ede31467..31e165e8daa946e97014961de55ff7e840c32a67 100644
--- a/device/bluetooth/bluetooth_profile_chromeos.cc
+++ b/device/bluetooth/bluetooth_profile_chromeos.cc
@@ -90,7 +90,7 @@ void BluetoothProfileChromeOS::Init(
   // The object path is relatively meaningless, but has to be unique, so we
   // use the UUID of the profile.
   std::string uuid_path;
-  ReplaceChars(uuid, ":-", "_", &uuid_path);
+  base::ReplaceChars(uuid, ":-", "_", &uuid_path);
 
   object_path_ = dbus::ObjectPath("/org/chromium/bluetooth_profile/" +
                                   uuid_path);