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

third_party/WebKit/Source/platform/Widget.cpp

 /*
  * Copyright (C) 2004, 2005, 2006, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 70 matching lines @@
 
 IntRect Widget::convertToRootFrame(const IntRect& localRect) const
 {
     if (const Widget* parentWidget = parent()) {
         IntRect parentRect = convertToContainingWidget(localRect);
         return parentWidget->convertToRootFrame(parentRect);
     }
     return localRect;
 }
 
+FloatRect Widget::convertToRootFrame(const FloatRect& localRect) const
+{
+    if (const Widget* parentWidget = parent()) {
+        FloatRect parentRect = convertToContainingWidget(localRect);
+        return parentWidget->convertToRootFrame(parentRect);
+    }
+    return localRect;
+}
+
 IntPoint Widget::convertFromRootFrame(const IntPoint& pointInRootFrame) const
 {
     if (const Widget* parentWidget = parent()) {
         IntPoint parentPoint = parentWidget->convertFromRootFrame(pointInRootFrame);
         return convertFromContainingWidget(parentPoint);
     }
     return pointInRootFrame;
 }
 
 FloatPoint Widget::convertFromRootFrame(const FloatPoint& pointInRootFrame) const
@@ skipping 38 matching lines @@
 {
     if (const Widget* parentWidget = parent()) {
         IntRect localRect = parentRect;
         localRect.setLocation(parentWidget->convertSelfToChild(this, localRect.location()));
         return localRect;
     }
 
     return parentRect;
 }
 
+FloatRect Widget::convertToContainingWidget(const FloatRect& localRect) const
+{
+    if (const Widget* parentWidget = parent()) {
+        FloatRect parentRect(localRect);
+        parentRect.setLocation(parentWidget->convertChildToSelf(this, localRect.location()));
+        return parentRect;
+    }
+    return localRect;
+}
+
 IntPoint Widget::convertToContainingWidget(const IntPoint& localPoint) const
 {
     if (const Widget* parentWidget = parent())
         return parentWidget->convertChildToSelf(this, localPoint);
 
     return localPoint;
 }
 
 IntPoint Widget::convertFromContainingWidget(const IntPoint& parentPoint) const
 {
     if (const Widget* parentWidget = parent())
         return parentWidget->convertSelfToChild(this, parentPoint);
 
     return parentPoint;
 }
 
 IntPoint Widget::convertChildToSelf(const Widget*, const IntPoint& point) const
 {
     return point;
 }
 
 IntPoint Widget::convertSelfToChild(const Widget*, const IntPoint& point) const
 {
     return point;
 }
 
+FloatPoint Widget::convertChildToSelf(const Widget*, const FloatPoint& point) const
+{
+    return point;
+}
+
 } // namespace blink