Added text filtering to Overview Mode

ash/wm/overview/window_selector_item.cc

Index: ash/wm/overview/window_selector_item.cc
diff --git a/ash/wm/overview/window_selector_item.cc b/ash/wm/overview/window_selector_item.cc
index 7b0d872a9462a88a69efe6caccffec70ff599741..5f66f84c179f5897ce1f80eec2fb6d68a2c6976e 100644
--- a/ash/wm/overview/window_selector_item.cc
+++ b/ash/wm/overview/window_selector_item.cc
@@ -107,7 +107,8 @@ views::Widget* CreateWindowLabel(aura::Window* root_window,
 const int WindowSelectorItem::kFadeInMilliseconds = 80;
 
 WindowSelectorItem::WindowSelectorItem()
-    : root_window_(NULL),
+    : active_(true),
+      root_window_(NULL),
       in_bounds_update_(false) {
 }
 
@@ -234,6 +235,13 @@ void WindowSelectorItem::UpdateCloseButtonBounds(aura::Window* root_window,
   }
 }
 
+void WindowSelectorItem::SetActive(bool active) {
+  active_ = active;
+  window_label_->GetNativeWindow()->layer()->SetOpacity(active ? 1 : 0.5);
+  close_button_->GetNativeWindow()->layer()->SetOpacity(active ? 1 : 0.5);
+  ChangeItemVisibility(active);
+}
+
 void WindowSelectorItem::UpdateWindowLabels(const gfx::Rect& window_bounds,
                                             aura::Window* root_window,
                                             bool animate) {