ash: Explicitly teach various components about ShelfLayoutManager.

ash/wm/dock/docked_window_layout_manager.cc

 // Copyright (c) 2013 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/dock/docked_window_layout_manager.h"
 
 #include "ash/screen_util.h"
 #include "ash/shelf/shelf.h"
 #include "ash/shelf/shelf_constants.h"
 #include "ash/shelf/shelf_layout_manager.h"
@@ skipping 408 matching lines @@
       AddObserver(this);
   Shell::GetInstance()->AddShellObserver(this);
 }
 
 DockedWindowLayoutManager::~DockedWindowLayoutManager() {
   Shutdown();
 }
 
 void DockedWindowLayoutManager::Shutdown() {
   if (shelf_ && shelf_->shelf_widget()) {
-    ShelfLayoutManager* shelf_layout_manager = ShelfLayoutManager::ForShelf(
-        shelf_->shelf_widget()->GetNativeWindow());
+    ShelfLayoutManager* shelf_layout_manager =
+        shelf_->shelf_widget()->shelf_layout_manager();
     shelf_layout_manager->RemoveObserver(this);
     shelf_observer_.reset();
   }
   shelf_ = NULL;
   for (size_t i = 0; i < dock_container_->children().size(); ++i) {
     aura::Window* child = dock_container_->children()[i];
     child->RemoveObserver(this);
     wm::GetWindowState(child)->RemoveObserver(this);
   }
   aura::client::GetActivationClient(Shell::GetPrimaryRootWindow())->
@@ skipping 92 matching lines @@
   dragged_bounds_ = gfx::Rect();
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::CHILD_CHANGED);
   RecordUmaAction(action, source);
 }
 
 void DockedWindowLayoutManager::SetShelf(Shelf* shelf) {
   DCHECK(!shelf_);
   shelf_ = shelf;
   if (shelf_->shelf_widget()) {
-    ShelfLayoutManager* shelf_layout_manager = ShelfLayoutManager::ForShelf(
-        shelf_->shelf_widget()->GetNativeWindow());
+    ShelfLayoutManager* shelf_layout_manager =
+        shelf_->shelf_widget()->shelf_layout_manager();
     shelf_layout_manager->AddObserver(this);
     shelf_observer_.reset(new ShelfWindowObserver(this));
   }
 }
 
 DockedAlignment DockedWindowLayoutManager::GetAlignmentOfWindow(
     const aura::Window* window) const {
   const gfx::Rect& bounds(window->GetBoundsInScreen());
 
   // Test overlap with an existing docked area first.
@@ skipping 811 matching lines @@
 
 void DockedWindowLayoutManager::OnKeyboardBoundsChanging(
     const gfx::Rect& keyboard_bounds) {
   // This bounds change will have caused a change to the Shelf which does not
   // propagate automatically to this class, so manually recalculate bounds.
   Relayout();
   UpdateDockBounds(DockedWindowLayoutManagerObserver::KEYBOARD_BOUNDS_CHANGING);
 }
 
 }  // namespace ash