Draggable peeking/fullscreen launcher with transparent background.

ash/public/cpp/shell_window_ids.h

Index: ash/public/cpp/shell_window_ids.h
diff --git a/ash/public/cpp/shell_window_ids.h b/ash/public/cpp/shell_window_ids.h
index d5ae3c0b2debe4fdcbec87c35b62336181906c08..7d0b3f1059936cd3d9eb33d9a7490ffe081278f4 100644
--- a/ash/public/cpp/shell_window_ids.h
+++ b/ash/public/cpp/shell_window_ids.h
@@ -56,6 +56,9 @@ enum ShellWindowId {
   // The container for top-level windows with the 'always-on-top' flag set.
   kShellWindowId_AlwaysOnTopContainer,
 
+  // The container for the app list.
+  kShellWindowId_AppListContainer,
+
   // The container for the shelf.
   kShellWindowId_ShelfContainer,
 
@@ -65,9 +68,6 @@ enum ShellWindowId {
   // The container for panel windows.
   kShellWindowId_PanelContainer,
 
-  // The container for the app list.
-  kShellWindowId_AppListContainer,
-
   // The container for user-specific modal windows.
   kShellWindowId_SystemModalContainer,
 
@@ -137,10 +137,10 @@ const int32_t kAllShellContainerIds[] = {
     kShellWindowId_VirtualKeyboardContainer,
     kShellWindowId_DefaultContainer,
     kShellWindowId_AlwaysOnTopContainer,
+    kShellWindowId_AppListContainer,
     kShellWindowId_ShelfContainer,
     kShellWindowId_ShelfBubbleContainer,
     kShellWindowId_PanelContainer,
-    kShellWindowId_AppListContainer,
     kShellWindowId_SystemModalContainer,
     kShellWindowId_LockScreenWallpaperContainer,
     kShellWindowId_LockScreenContainer,