Refactor PhantomWindowController so that the PhantomWindowController owns the phantom window

ash/wm/workspace/workspace_window_resizer.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/workspace/workspace_window_resizer.h"
 
 #include <algorithm>
 #include <cmath>
 #include <utility>
 #include <vector>
@@ skipping 543 matching lines @@
     // This way we don't snap on resize.
     int min_size = std::min(initial_size,
                             std::max(PrimaryAxisSize(min), kMinOnscreenSize));
     total_min_ += min_size;
     total_initial_size_ += initial_size;
     total_available += std::max(min_size, initial_size) - min_size;
   }
   instance_ = this;
 }
 
-gfx::Rect WorkspaceWindowResizer::GetFinalBounds(
-    const gfx::Rect& bounds) const {
-  if (snap_phantom_window_controller_.get() &&
-      snap_phantom_window_controller_->IsShowing()) {
-    return snap_phantom_window_controller_->bounds_in_screen();
-  }
-  return bounds;
-}
-
 void WorkspaceWindowResizer::LayoutAttachedWindows(
     gfx::Rect* bounds) {
   gfx::Rect work_area(ScreenAsh::GetDisplayWorkAreaBoundsInParent(window()));
   int initial_size = PrimaryAxisSize(details_.initial_bounds_in_parent.size());
   int current_size = PrimaryAxisSize(bounds->size());
   int start = PrimaryAxisCoordinate(bounds->right(), bounds->bottom());
   int end = PrimaryAxisCoordinate(work_area.right(), work_area.bottom());
 
   int delta = current_size - initial_size;
   int available_size = end - start;
@@ skipping 459 matching lines @@
   } else {
     if (dock_layout_->is_dragged_window_docked()) {
       dock_layout_->UndockDraggedWindow();
       window_state()->set_bounds_changed_by_user(true);
     }
   }
 }
 
 }  // namespace internal
 }  // namespace ash