Move MaximizeModeWindowManager to the controller

ash/shelf/shelf_layout_manager.cc

Index: ash/shelf/shelf_layout_manager.cc
diff --git a/ash/shelf/shelf_layout_manager.cc b/ash/shelf/shelf_layout_manager.cc
index fce6b9e1f1eb1e4075ecf328f275b7ee004ee11b..95aed7def73679cf25e7e32d4e6f2c2eac3ce33a 100644
--- a/ash/shelf/shelf_layout_manager.cc
+++ b/ash/shelf/shelf_layout_manager.cc
@@ -25,6 +25,7 @@
 #include "ash/system/status_area_widget.h"
 #include "ash/wm/gestures/shelf_gesture_handler.h"
 #include "ash/wm/lock_state_controller.h"
+#include "ash/wm/maximize_mode/maximize_mode_controller.h"
 #include "ash/wm/mru_window_tracker.h"
 #include "ash/wm/window_animations.h"
 #include "ash/wm/window_state.h"
@@ -32,7 +33,6 @@
 #include "ash/wm/workspace_controller.h"
 #include "base/auto_reset.h"
 #include "base/command_line.h"
-#include "base/command_line.h"
 #include "base/i18n/rtl.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
@@ -189,8 +189,6 @@ class ShelfLayoutManager::UpdateShelfObserver
 ShelfLayoutManager::ShelfLayoutManager(ShelfWidget* shelf)
     : root_window_(shelf->GetNativeView()->GetRootWindow()),
       updating_bounds_(false),
-      force_shelf_always_visibile_(
-          Shell::GetInstance()->IsMaximizeModeWindowManagerEnabled()),
       auto_hide_behavior_(SHELF_AUTO_HIDE_BEHAVIOR_NEVER),
       alignment_(SHELF_ALIGNMENT_BOTTOM),
       shelf_(shelf),
@@ -297,7 +295,7 @@ void ShelfLayoutManager::LayoutShelf() {
 }
 
 ShelfVisibilityState ShelfLayoutManager::CalculateShelfVisibility() {
-  switch(auto_hide_behavior_) {
+  switch (auto_hide_behavior_) {
     case SHELF_AUTO_HIDE_BEHAVIOR_ALWAYS:
       return SHELF_AUTO_HIDE;
     case SHELF_AUTO_HIDE_BEHAVIOR_NEVER:
@@ -562,17 +560,10 @@ void ShelfLayoutManager::OnLockStateChanged(bool locked) {
 }
 
 void ShelfLayoutManager::OnMaximizeModeStarted() {
-  DCHECK(!force_shelf_always_visibile_);
-  force_shelf_always_visibile_ = true;
   UpdateVisibilityState();
 }
 
 void ShelfLayoutManager::OnMaximizeModeEnded() {
-  DCHECK(force_shelf_always_visibile_);
-  // Note: At this time Ash::Shell::IsMaximizeModeWindowManagerEnabled() will
-  // report true, even though it is in progress of shut down. To address this
-  // |force_shelf_always_visibile_| will be read.
-  force_shelf_always_visibile_ = false;
   UpdateVisibilityState();
 }
 
@@ -804,8 +795,8 @@ void ShelfLayoutManager::CalculateTargetBounds(
     else
       shelf_width = kAutoHideSize;
   } else if (state.visibility_state == SHELF_HIDDEN ||
-      (!keyboard_bounds_.IsEmpty() && !keyboard::IsKeyboardOverscrollEnabled()))
-  {
+      (!keyboard_bounds_.IsEmpty() &&
+       !keyboard::IsKeyboardOverscrollEnabled())) {
     if (IsHorizontalAlignment())
       shelf_height = 0;
     else
@@ -1140,12 +1131,14 @@ int ShelfLayoutManager::GetWorkAreaSize(const State& state, int size) const {
 }
 
 bool ShelfLayoutManager::IsShelfForcedToBeVisible() const {
+  bool force_shelf_always_visibile = Shell::GetInstance()->
+      maximize_mode_controller()->IsMaximizeModeWindowManagerEnabled();
   // Bail out early when there is no |workspace_controller_|, which happens
   // during shutdown after PrepareForShutdown.
   if (!workspace_controller_)
-    return force_shelf_always_visibile_;
+    return force_shelf_always_visibile;
 
-  return force_shelf_always_visibile_ &&
+  return force_shelf_always_visibile &&
       workspace_controller_->GetWindowState() !=
           WORKSPACE_WINDOW_STATE_FULL_SCREEN;
 }