Draggable peeking/fullscreen launcher with transparent background.

ui/app_list/views/all_apps_tile_item_view.cc

Index: ui/app_list/views/all_apps_tile_item_view.cc
diff --git a/ui/app_list/views/all_apps_tile_item_view.cc b/ui/app_list/views/all_apps_tile_item_view.cc
index a2bfb8a27a185d4ac05553707a465717b271905f..fd21536c8a98de6fa3b37c54e58b1dd9e3986595 100644
--- a/ui/app_list/views/all_apps_tile_item_view.cc
+++ b/ui/app_list/views/all_apps_tile_item_view.cc
@@ -6,7 +6,9 @@
 
 #include "base/metrics/histogram_macros.h"
 #include "ui/app_list/app_list_constants.h"
+#include "ui/app_list/app_list_features.h"
 #include "ui/app_list/resources/grit/app_list_resources.h"
+#include "ui/app_list/views/app_list_view.h"
 #include "ui/app_list/views/contents_view.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
@@ -38,8 +40,9 @@ class AllAppsImageSource : public gfx::CanvasImageSource {
 
 }  // namespace
 
-AllAppsTileItemView::AllAppsTileItemView(ContentsView* contents_view)
-    : contents_view_(contents_view) {
+AllAppsTileItemView::AllAppsTileItemView(ContentsView* contents_view,
+                                         AppListView* app_list_view)
+    : contents_view_(contents_view), app_list_view_(app_list_view) {
   SetTitle(l10n_util::GetStringUTF16(IDS_APP_LIST_ALL_APPS));
   SetHoverStyle(TileItemView::HOVER_STYLE_ANIMATE_SHADOW);
   UpdateIcon();
@@ -64,6 +67,8 @@ void AllAppsTileItemView::ButtonPressed(views::Button* sender,
                             AppListModel::STATE_LAST);
 
   contents_view_->SetActiveState(AppListModel::STATE_APPS);
+  if (features::IsFullscreenAppListEnabled())
+    app_list_view_->SetState(AppListView::FULLSCREEN);
 }
 
 }  // namespace app_list