Update appearance of invalid textfields in Harmony.

ui/views/controls/focus_ring.h

Index: ui/views/controls/focus_ring.h
diff --git a/ui/views/controls/focus_ring.h b/ui/views/controls/focus_ring.h
index 2438bc7b9dd5f215359deddab148669cc2f798a6..26fc5b8e7a1559fa92a20d05a620ef87f55905b5 100644
--- a/ui/views/controls/focus_ring.h
+++ b/ui/views/controls/focus_ring.h
@@ -5,6 +5,8 @@
 #ifndef UI_VIEWS_CONTROLS_FOCUS_RING_H_
 #define UI_VIEWS_CONTROLS_FOCUS_RING_H_
 
+#include "base/optional.h"
+#include "ui/native_theme/native_theme.h"
 #include "ui/views/view.h"
 
 namespace views {
@@ -14,12 +16,19 @@ namespace views {
 // the bounds of its parent view.
 class FocusRing : public View {
  public:
+  static const char kViewClassName[];
+
   // Create a FocusRing and adds it to |parent|.
   static void Install(views::View* parent);
 
   // Removes the FocusRing from |parent|.
   static void Uninstall(views::View* parent);
 
+  // FIXME

[sky, 2016/10/11 23:59:18]

?

[Evan Stade, 2016/10/12 00:36:38]

oops, supposed to be a note to myself to add docs.

+  static void SetColorId(

[sky, 2016/10/11 23:59:18]

WDYT of making the override_color_id an optional parameter to Install? That way
it's clearer the FocusRing has to be there.

[Evan Stade, 2016/10/12 00:36:38]

sure, done. I got rid of base::Optional because it made it hard to use
ternaries:

error: incompatible operand types ('ui::NativeTheme::ColorId' and 'const
base::nullopt_t')

luckily since it's an enum there's already a reserved, unused value.

+      views::View* parent,
+      const base::Optional<ui::NativeTheme::ColorId>& override_color_id);
+
   // View:
   const char* GetClassName() const override;
   bool CanProcessEventsWithinSubtree() const override;
@@ -27,11 +36,11 @@ class FocusRing : public View {
   void OnPaint(gfx::Canvas* canvas) override;
 
  private:
-  static const char kViewClassName[];
-
   FocusRing();
   ~FocusRing() override;
 
+  base::Optional<ui::NativeTheme::ColorId> override_color_id_;
+
   DISALLOW_COPY_AND_ASSIGN(FocusRing);
 };