Avoid loosing of the display mode value

Source/web/WebViewImpl.cpp

 /*
  * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 422 matching lines @@
     , m_fullscreenController(FullscreenController::create(this))
     , m_showFPSCounter(false)
     , m_showPaintRects(false)
     , m_showDebugBorders(false)
     , m_continuousPaintingEnabled(false)
     , m_showScrollBottleneckRects(false)
     , m_baseBackgroundColor(Color::white)
     , m_backgroundColorOverride(Color::transparent)
     , m_zoomFactorOverride(0)
     , m_userGestureObserved(false)
+    , m_displayMode(WebDisplayModeBrowser)
 {
     Page::PageClients pageClients;
     pageClients.chromeClient = &m_chromeClientImpl;
     pageClients.contextMenuClient = &m_contextMenuClientImpl;
     pageClients.editorClient = &m_editorClientImpl;
     pageClients.dragClient = &m_dragClientImpl;
     pageClients.inspectorClient = &m_inspectorClientImpl;
     pageClients.spellCheckerClient = &m_spellCheckerClientImpl;
 
     m_page = adoptPtrWillBeNoop(new Page(pageClients));
@@ skipping 116 matching lines @@
             mouseContextMenu(event);
 #else
         if (event.button == WebMouseEvent::ButtonRight)
             mouseContextMenu(event);
 #endif
     }
 }
 
 void WebViewImpl::setDisplayMode(WebDisplayMode mode)
 {
+    m_displayMode = mode;
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return;
 
     mainFrameImpl()->frameView()->setDisplayMode(mode);
 }
 
 void WebViewImpl::mouseContextMenu(const WebMouseEvent& event)
 {
     if (!mainFrameImpl() || !mainFrameImpl()->frameView())
         return;
@@ skipping 4100 matching lines @@
     return mainFrameImpl()->frameView()->layoutSize().width() == m_size.width
         || (constraints.minimumScale == constraints.maximumScale && constraints.minimumScale != -1);
 }
 
 void WebViewImpl::forceNextWebGLContextCreationToFail()
 {
     WebGLRenderingContext::forceNextWebGLContextCreationToFail();
 }
 
 } // namespace blink