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

ash/wm/shelf_layout_manager.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/wm/shelf_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "ash/ash_switches.h"
@@ skipping 239 matching lines @@
       root_window_, target_bounds.work_area_insets);
   UpdateHitTestBounds();
 }
 
 void ShelfLayoutManager::UpdateVisibilityState() {
   ShellDelegate* delegate = Shell::GetInstance()->delegate();
   if (delegate && delegate->IsScreenLocked()) {
     SetState(SHELF_VISIBLE);
   } else if (gesture_drag_status_ == GESTURE_DRAG_COMPLETE_IN_PROGRESS) {
     SetState(SHELF_AUTO_HIDE);
+  } else if (delegate && delegate->IsImmersiveMode()) {
+    // The user choosing immersive mode indicates he or she wants to maximize
+    // screen real-estate for content, so always auto-hide the shelf.
+    SetState(SHELF_AUTO_HIDE);
   } else {
     WorkspaceWindowState window_state(workspace_controller_->GetWindowState());
     switch (window_state) {
       case WORKSPACE_WINDOW_STATE_FULL_SCREEN:
         SetState(SHELF_HIDDEN);
         break;
 
       case WORKSPACE_WINDOW_STATE_MAXIMIZED:
           SetState(auto_hide_behavior_ == SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS ?
                    SHELF_AUTO_HIDE : SHELF_VISIBLE);
@@ skipping 623 matching lines @@
 int ShelfLayoutManager::GetWorkAreaSize(const State& state, int size) const {
   if (state.visibility_state == SHELF_VISIBLE)
     return size;
   if (state.visibility_state == SHELF_AUTO_HIDE)
     return kAutoHideSize;
   return 0;
 }
 
 }  // namespace internal
 }  // namespace ash