Full Keyboard Access: Second Approach

ui/views/controls/combobox/combobox.cc

Index: ui/views/controls/combobox/combobox.cc
diff --git a/ui/views/controls/combobox/combobox.cc b/ui/views/controls/combobox/combobox.cc
index 3de636fbdc15b1add675be3c316968e7afca2c1f..5215c7c800c50a229b9d8c2c061bae7c97788ccc 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -95,6 +95,8 @@ class TransparentButton : public CustomButton {
   TransparentButton(ButtonListener* listener)
       : CustomButton(listener) {
     SetAnimationDuration(LabelButton::kHoverAnimationDurationMs);
+    SetFocusable(false);
+    SetAccessibilityFocusable(false);
   }
   ~TransparentButton() override {}
 
@@ -353,7 +355,7 @@ Combobox::Combobox(ui::ComboboxModel* model)
       arrow_button_(new TransparentButton(this)),
       weak_ptr_factory_(this) {
   ModelChanged();
-  SetFocusable(true);
+  PlatformStyle::ConfigureFocus(PlatformStyle::CONTROL::COMBOBOX, this);
   UpdateBorder();
   // set_background() takes ownership but takes a raw pointer.
   scoped_ptr<Background> b = PlatformStyle::CreateComboboxBackground();
@@ -381,8 +383,6 @@ Combobox::Combobox(ui::ComboboxModel* model)
 
   text_button_->SetVisible(true);
   arrow_button_->SetVisible(true);
-  text_button_->SetFocusable(false);
-  arrow_button_->SetFocusable(false);
   AddChildView(text_button_);
   AddChildView(arrow_button_);
 }