[cros] Use same textfield settings across existing/new user pods and screen lock.

chrome/browser/chromeos/login/textfield_with_margin.h

Index: chrome/browser/chromeos/login/textfield_with_margin.h
diff --git a/chrome/browser/chromeos/login/textfield_with_margin.h b/chrome/browser/chromeos/login/textfield_with_margin.h
index 338f79dd5d053967c52402507d7935cc010c49eb..7fec58e4e9eb2c763640417fd41a902eddc434ab 100644
--- a/chrome/browser/chromeos/login/textfield_with_margin.h
+++ b/chrome/browser/chromeos/login/textfield_with_margin.h
@@ -19,8 +19,12 @@ class TextfieldWithMargin : public views::Textfield {
   explicit TextfieldWithMargin(views::Textfield::StyleFlags style)
       : Textfield(style) {}
 
-  // Reimplements views::Textfield.
+ protected:
+  // Overridden from views::View:
   virtual void Layout();
+  virtual void ViewHierarchyChanged(bool is_add,
+                                    views::View *parent,
+                                    views::View *child);
 
  private:
   DISALLOW_COPY_AND_ASSIGN(TextfieldWithMargin);