cros-md: Remove the non-MD immersive mode code paths

ash/common/shelf/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/common/shelf/shelf_layout_manager.h"
 
 #include <algorithm>
 #include <cmath>
 #include <vector>
 
 #include "ash/animation/animation_change_type.h"
-#include "ash/common/material_design/material_design_controller.h"
 #include "ash/common/session/session_controller.h"
 #include "ash/common/session/session_state_delegate.h"
 #include "ash/common/shelf/shelf_constants.h"
 #include "ash/common/shelf/shelf_layout_manager_observer.h"
 #include "ash/common/shelf/shelf_widget.h"
 #include "ash/common/shelf/wm_shelf.h"
 #include "ash/common/system/status_area_widget.h"
 #include "ash/common/wm/fullscreen_window_finder.h"
 #include "ash/common/wm/mru_window_tracker.h"
 #include "ash/common/wm/window_state.h"
@@ skipping 1005 matching lines @@
 }
 
 float ShelfLayoutManager::ComputeTargetOpacity(const State& state) {
   if (gesture_drag_status_ == GESTURE_DRAG_IN_PROGRESS ||
       state.visibility_state == SHELF_VISIBLE) {
     return 1.0f;
   }
   // In Chrome OS Material Design, when shelf is hidden during auto hide state,
   // target bounds are also hidden. So the window can extend to the edge of
   // screen.
-  if (ash::MaterialDesignController::IsImmersiveModeMaterial()) {
-    return (state.visibility_state == SHELF_AUTO_HIDE &&
-            state.auto_hide_state == SHELF_AUTO_HIDE_SHOWN)
-               ? 1.0f
-               : 0.0f;
-  }
-  return (state.visibility_state == SHELF_AUTO_HIDE) ? 1.0f : 0.0f;
+  return (state.visibility_state == SHELF_AUTO_HIDE &&
+          state.auto_hide_state == SHELF_AUTO_HIDE_SHOWN)
+             ? 1.0f
+             : 0.0f;
 }
 
 bool ShelfLayoutManager::IsShelfHiddenForFullscreen() const {
   const WmWindow* fullscreen_window = wm::GetWindowForFullscreenMode(
       WmLookup::Get()->GetWindowForWidget(shelf_widget_));
   return fullscreen_window &&
          fullscreen_window->GetWindowState()->hide_shelf_when_fullscreen();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
@@ skipping 84 matching lines @@
   gesture_drag_status_ = GESTURE_DRAG_NONE;
 }
 
 void ShelfLayoutManager::CancelGestureDrag() {
   gesture_drag_status_ = GESTURE_DRAG_CANCEL_IN_PROGRESS;
   UpdateVisibilityState();
   gesture_drag_status_ = GESTURE_DRAG_NONE;
 }
 
 }  // namespace ash