Update appearance of invalid textfields in Harmony.

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 1a28b12433f14585c7479c71f13c942e3e8595f9..55353ee8a4874498dbeff19c73dd9df4b11a7c6d 100644
--- a/ui/views/controls/textfield/textfield.h
+++ b/ui/views/controls/textfield/textfield.h
@@ -163,6 +163,10 @@ class VIEWS_EXPORT Textfield : public View,
     placeholder_text_color_ = color;
   }
 
+  // Sets whether to indicate the textfield has invalid content.
+  void SetInvalid(bool invalid);
+  bool invalid() const { return invalid_; }
+
   // Get or set the horizontal alignment used for the button from the underlying
   // RenderText object.
   gfx::HorizontalAlignment GetHorizontalAlignment() const;
@@ -349,6 +353,9 @@ class VIEWS_EXPORT Textfield : public View,
   // Updates the painted background color.
   void UpdateBackgroundColor();
 
+  // Updates the border per the state of |invalid_|.
+  void UpdateBorder();
+
   // Does necessary updates when the text and/or cursor position changes.
   void UpdateAfterChange(bool text_changed, bool cursor_changed);
 
@@ -464,6 +471,10 @@ class VIEWS_EXPORT Textfield : public View,
   // TODO(estade): remove this when Harmony/MD is default.
   SkColor placeholder_text_color_;
 
+  // True when the contents are deemed unacceptable and should be indicated as
+  // such.
+  bool invalid_;
+
   // The accessible name of the text field.
   base::string16 accessible_name_;