Compute the popup location/size correctly when use-zoom-for-dsf is enabled.

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 494 matching lines @@
     // If the frame is still being created, it might not yet have a WebWidget.
     // FIXME: Is this the right thing to do? Is there a way to avoid having
     // a local frame root that doesn't have a WebWidget? During initialization
     // there is no content to draw so this call serves no purpose.
     if (WebLocalFrameImpl::fromFrame(localRoot)->frameWidget())
         toWebFrameWidgetImpl(WebLocalFrameImpl::fromFrame(localRoot)->frameWidget())->scheduleAnimation();
 }
 
 IntRect ChromeClientImpl::viewportToScreen(const IntRect& rectInViewport) const
 {
-    IntRect screenRect(rectInViewport);
+    WebRect screenRect(rectInViewport);
 
     if (m_webView->client()) {
+        m_webView->client()->convertViewportToWindow(&screenRect);
         WebRect windowRect = m_webView->client()->windowRect();
-        screenRect.move(windowRect.x, windowRect.y);
+        screenRect.x += windowRect.x;
+        screenRect.y += windowRect.y;
     }
-
     return screenRect;
 }
 
 WebScreenInfo ChromeClientImpl::screenInfo() const
 {
     return m_webView->client() ? m_webView->client()->screenInfo() : WebScreenInfo();
 }
 
 void ChromeClientImpl::contentsSizeChanged(LocalFrame* frame, const IntSize& size) const
 {
@@ skipping 487 matching lines @@
     if (m_webView->pageImportanceSignals())
         m_webView->pageImportanceSignals()->setIssuedNonGetFetchFromScript();
 }
 
 PassOwnPtr<WebFrameScheduler> ChromeClientImpl::createFrameScheduler()
 {
     return m_webView->scheduler()->createFrameScheduler().release();
 }
 
 } // namespace blink