Revert of Draggable peeking/fullscreen launcher with transparent background.

ash/shell.cc

Index: ash/shell.cc
diff --git a/ash/shell.cc b/ash/shell.cc
index 38437f3f5aa6f1c313640e71718cd64e521e6f32..61379d587dbbeef3f3137f90b83b5ea7d2beec5b 100644
--- a/ash/shell.cc
+++ b/ash/shell.cc
@@ -553,12 +553,6 @@
   g_is_browser_process_with_mash = true;
 }
 
-void Shell::OnAppListVisibilityChanged(bool visible,
-                                       aura::Window* root_window) {
-  for (auto& observer : shell_observers_)
-    observer.OnAppListVisibilityChanged(visible, root_window);
-}
-
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, private:
 
@@ -919,9 +913,11 @@
   if (!display_initialized)
     display_manager_->InitDefaultDisplay();
 
+  // TODO(sky): move this to chrome for mash. http://crbug.com/729824.
+  if (ShouldEnableSimplifiedDisplayManagement())
+    display_manager_->RefreshFontParams();
+
   if (config == Config::CLASSIC) {
-    display_manager_->RefreshFontParams();
-
     aura::Env::GetInstance()->set_context_factory(init_params.context_factory);
     aura::Env::GetInstance()->set_context_factory_private(
         init_params.context_factory_private);