[Element / Autofill] Add boundsInViewportFloat() to fix <input> popup misalignment.

third_party/WebKit/Source/core/input/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 2958 matching lines @@
     VisualViewport& visualViewport = m_frame->page()->frameHost().visualViewport();
 
     if (!overrideTargetElement && start.anchorNode() && (selection.rootEditableElement() || selection.isRange())) {
         IntRect firstRect = m_frame->editor().firstRectForRange(selection.selection().toNormalizedEphemeralRange());
 
         int x = rightAligned ? firstRect.maxX() : firstRect.x();
         // In a multiline edit, firstRect.maxY() would endup on the next line, so -1.
         int y = firstRect.maxY() ? firstRect.maxY() - 1 : 0;
         locationInRootFrame = view->contentsToRootFrame(IntPoint(x, y));
     } else if (focusedElement) {
-        IntRect clippedRect = focusedElement->boundsInViewport();
+        IntRect clippedRect = focusedElement->boundsInViewportInt();
         locationInRootFrame = visualViewport.viewportToRootFrame(clippedRect.center());
     } else {
         locationInRootFrame = IntPoint(
             rightAligned
                 ? visualViewport.visibleRect().maxX() - kContextMenuMargin
                 : visualViewport.location().x() + kContextMenuMargin,
             visualViewport.location().y() + kContextMenuMargin);
     }
 
     m_frame->view()->setCursor(pointerCursor());
@@ skipping 1147 matching lines @@
 PlatformEvent::Modifiers EventHandler::accessKeyModifiers()
 {
 #if OS(MACOSX)
     return static_cast<PlatformEvent::Modifiers>(PlatformEvent::CtrlKey | PlatformEvent::AltKey);
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace blink