Add accessibility info to app list items and allow them to be focused.

ash/app_list/app_list_item_view.cc

Index: ash/app_list/app_list_item_view.cc
diff --git a/ash/app_list/app_list_item_view.cc b/ash/app_list/app_list_item_view.cc
index c9e74922154ff86079305586f38d0294a68bb239..dc6d247adcafe303652358248062182fba6f9b3a 100644
--- a/ash/app_list/app_list_item_view.cc
+++ b/ash/app_list/app_list_item_view.cc
@@ -13,6 +13,7 @@
 #include "base/synchronization/cancellation_flag.h"
 #include "base/threading/worker_pool.h"
 #include "base/utf_string_conversions.h"
+#include "ui/base/accessibility/accessible_view_state.h"
 #include "ui/base/animation/throb_animation.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/gfx/canvas.h"
@@ -203,6 +204,7 @@ AppListItemView::AppListItemView(AppListModelView* list_model_view,
 
   set_context_menu_controller(this);
   set_request_focus_on_press(false);
+  set_focusable(true);
 }
 
 AppListItemView::~AppListItemView() {
@@ -251,6 +253,7 @@ void AppListItemView::SetSelected(bool selected) {
   if (selected == selected_)
     return;
 
+  RequestFocus();
   selected_ = selected;
   SchedulePaint();
 }
@@ -360,6 +363,11 @@ void AppListItemView::OnPaint(gfx::Canvas* canvas) {
   }
 }
 
+void AppListItemView::GetAccessibleState(ui::AccessibleViewState* state) {
+  state->role = ui::AccessibilityTypes::ROLE_PUSHBUTTON;
+  state->name = UTF8ToUTF16(model_->title());
+}
+
 void AppListItemView::ShowContextMenuForView(views::View* source,
                                              const gfx::Point& point) {
   ui::MenuModel* menu_model = model_->GetContextMenuModel();