[content shell] implement auto resize related WebTestDelegate interfaces

content/public/test/layouttest_support.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_
 #define CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_
 
 #include "base/callback_forward.h"
 
 namespace WebKit {
@@ skipping 54 matching lines @@
 
 // Set the device scale factor and force the compositor to resize.
 void SetDeviceScaleFactor(RenderView* render_view, float factor);
 
 // Disable system calls related to drag & drop.
 void DisableSystemDragDrop();
 
 // Don't show modal popup menus.
 void DisableModalPopupMenus();
 
+// Control auto resize mode.
+void EnableAutoResizeMode(RenderView* render_view,
+                          const WebKit::WebSize& min_size,
+                          const WebKit::WebSize& max_size);
+void DisableAutoResizeMode(RenderView* render_view,
+                           const WebKit::WebSize& new_size);
+
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_