Makes the maximize/restore button handling

ash/launcher/launcher_view.cc

Index: ash/launcher/launcher_view.cc
diff --git a/ash/launcher/launcher_view.cc b/ash/launcher/launcher_view.cc
index 1dd9ca7dd0748cd0fe3e098b12647786f098e33d..b475710b9081fb596bb9a88fcc4987c3d6f7709c 100644
--- a/ash/launcher/launcher_view.cc
+++ b/ash/launcher/launcher_view.cc
@@ -260,6 +260,20 @@ void LauncherView::Init() {
   // We'll layout when our bounds change.
 }
 
+gfx::Rect LauncherView::GetIdealBoundsOfItemIcon(LauncherID id) {
+  int index = model_->ItemIndexByID(id);
+  if (index == -1 || !view_model_->view_at(index)->visible())
+    return gfx::Rect();
+  const gfx::Rect& ideal_bounds(view_model_->ideal_bounds(index));
+  DCHECK_NE(TYPE_APP_LIST, model_->items()[index].type);
+  LauncherButton* button =
+      static_cast<LauncherButton*>(view_model_->view_at(index));
+  gfx::Rect icon_bounds = button->GetIconBounds();
+  return gfx::Rect(ideal_bounds.x() + icon_bounds.x(),
+                   ideal_bounds.y() + icon_bounds.y(),
+                   icon_bounds.width(), icon_bounds.height());
+}
+
 void LauncherView::LayoutToIdealBounds() {
   IdealBounds ideal_bounds;
   CalculateIdealBounds(&ideal_bounds);