ash/immersive mode: Hide the launcher when entering immersive mode

ash/root_window_controller.cc

Index: ash/root_window_controller.cc
diff --git a/ash/root_window_controller.cc b/ash/root_window_controller.cc
index 1993e4184e3c7d404a58a6228c84512e224ea183..fc60474d3f4fd6260109261d8ad0c3c66e2db28e 100644
--- a/ash/root_window_controller.cc
+++ b/ash/root_window_controller.cc
@@ -31,6 +31,7 @@
 #include "ash/wm/system_modal_container_layout_manager.h"
 #include "ash/wm/toplevel_window_event_handler.h"
 #include "ash/wm/window_properties.h"
+#include "ash/wm/workspace/workspace.h"
 #include "ash/wm/workspace_controller.h"
 #include "base/command_line.h"
 #include "base/time.h"
@@ -512,6 +513,10 @@ ShelfAlignment RootWindowController::GetShelfAlignment() {
   return shelf_->GetAlignment();
 }
 
+bool RootWindowController::IsImmersiveMode() const {
+  return workspace_controller_->GetActiveWorkspace()->IsImmersiveMode();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RootWindowController, private: