Update shelf spacing in Chrome OS according to the MD specs

ash/root_window_controller_unittest.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/root_window_controller.h"
 
 #include <memory>
 
 #include "ash/display/display_manager.h"
 #include "ash/session/session_state_delegate.h"
@@ skipping 187 matching lines @@
 
   // d2 must have been deleted.
   EXPECT_FALSE(tracker.Contains(d2));
 
   EXPECT_EQ(root_windows[0], normal->GetNativeView()->GetRootWindow());
   EXPECT_EQ("100,20 100x100", normal->GetWindowBoundsInScreen().ToString());
   EXPECT_EQ("100,20 100x100",
             normal->GetNativeView()->GetBoundsInRootWindow().ToString());
 
   // Maximized area on primary display has 3px (given as
-  // kAutoHideSize in shelf_layout_manager.cc) inset at the bottom.
+  // kAutoHideSize in shelf_constants.cc) inset at the bottom.
 
   // First clear fullscreen status, since both fullscreen and maximized windows
   // share the same desktop workspace, which cancels the shelf status.
   fullscreen->SetFullscreen(false);
   EXPECT_EQ(root_windows[0], maximized->GetNativeView()->GetRootWindow());
   EXPECT_EQ("0,0 600x597",
             maximized->GetWindowBoundsInScreen().ToString());
   EXPECT_EQ("0,0 600x597",
             maximized->GetNativeView()->GetBoundsInRootWindow().ToString());
 
@@ skipping 830 matching lines @@
   keyboard_controller->ui()->GetKeyboardWindow()->SetBounds(
       gfx::Rect(0, 400, 800, 200));
   EXPECT_EQ("0,400 800x200", keyboard_container->bounds().ToString());
 
   UpdateDisplay("600x800");
   EXPECT_EQ("0,600 600x200", keyboard_container->bounds().ToString());
 }
 
 }  // namespace test
 }  // namespace ash