Add dedicated windowToViewport method

third_party/WebKit/Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * 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.
@@ skipping 501 matching lines @@
 
     if (m_webView->client()) {
         m_webView->client()->convertViewportToWindow(&screenRect);
         WebRect windowRect = m_webView->client()->windowRect();
         screenRect.x += windowRect.x;
         screenRect.y += windowRect.y;
     }
     return screenRect;
 }
 
+float ChromeClientImpl::windowToViewport(float scalar) const
+{
+    return m_webView->client() ? m_webView->client()->convertWindowToViewport(scalar) : scalar;
+}
+
 WebScreenInfo ChromeClientImpl::screenInfo() const
 {
     return m_webView->client() ? m_webView->client()->screenInfo() : WebScreenInfo();
 }
 
 void ChromeClientImpl::contentsSizeChanged(LocalFrame* frame, const IntSize& size) const
 {
     m_webView->didChangeContentsSize();
 
     WebLocalFrameImpl* webframe = WebLocalFrameImpl::fromFrame(frame);
@@ skipping 491 matching lines @@
     if (m_webView->pageImportanceSignals())
         m_webView->pageImportanceSignals()->setIssuedNonGetFetchFromScript();
 }
 
 PassOwnPtr<WebFrameScheduler> ChromeClientImpl::createFrameScheduler()
 {
     return m_webView->scheduler()->createFrameScheduler().release();
 }
 
 } // namespace blink