Make text input type and password visibility bit independent in Textfield

ui/views/controls/textfield/textfield.h

Index: ui/views/controls/textfield/textfield.h
diff --git a/ui/views/controls/textfield/textfield.h b/ui/views/controls/textfield/textfield.h
index 5ff542d563771b9022b67e6c47d5ae5d57b7068f..5f4b0317680fe9690e518d79cb734a0b7ad74954 100644
--- a/ui/views/controls/textfield/textfield.h
+++ b/ui/views/controls/textfield/textfield.h
@@ -63,12 +63,9 @@ class VIEWS_EXPORT Textfield : public View {
   bool read_only() const { return read_only_; }
   void SetReadOnly(bool read_only);
 
-  // Gets/Sets whether or not this Textfield is a password field.
-  // TODO(bryeung): Currently this is only used in
-  // chrome/browser/chromeos/options/wifi_config_view.cc, which is being
-  // converted to WebUI.  Please remove this when that happens.
+  // Gets whether or not this Textfield is a password field. This property
+  // can be set by calling SetTextInputType.
   bool IsPassword() const;
-  void SetPassword(bool password);
 
   // Gets/Sets the input type of this textfield.
   ui::TextInputType GetTextInputType() const;