Draggable peeking/fullscreen launcher with transparent background.

ui/app_list/app_list_constants.h

Index: ui/app_list/app_list_constants.h
diff --git a/ui/app_list/app_list_constants.h b/ui/app_list/app_list_constants.h
index 7e6cb28feb4a405ae1163d4bc53ec01e9c66646e..02887087e4dfc3b4435c001911686dddf4b5c188 100644
--- a/ui/app_list/app_list_constants.h
+++ b/ui/app_list/app_list_constants.h
@@ -16,6 +16,10 @@
 
 namespace app_list {
 
+namespace fullscreen_constants {

[msw, 2017/06/06 17:56:31]

nit: don't add this nested namespace, move this next to the existing
app_list::kNumStartPageTiles, and rename this variant something like
kNumStartPageTilesFullscreen

[newcomer, 2017/06/06 23:26:27]

Done.

+APP_LIST_EXPORT extern const size_t kNumStartPageTiles;
+}  // namespace fullscreen_constants
+
 APP_LIST_EXPORT extern const SkColor kContentsBackgroundColor;
 APP_LIST_EXPORT extern const SkColor kSearchBoxBackground;