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

third_party/WebKit/public/web/WebElement.h

 /*
  * Copyright (C) 2009 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 20 matching lines @@
 #ifndef WebElement_h
 #define WebElement_h
 
 #include "../platform/WebImage.h"
 #include "WebNode.h"
 
 namespace blink {
 
 class Element;
 struct WebRect;
+struct WebFloatRect;
 
 // Provides access to some properties of a DOM element node.
 class WebElement : public WebNode {
 public:
     WebElement() : WebNode() { }
     WebElement(const WebElement& e) : WebNode(e) { }
 
     WebElement& operator=(const WebElement& e) { WebNode::assign(e); return *this; }
     void assign(const WebElement& e) { WebNode::assign(e); }
 
@@ skipping 15 matching lines @@
     BLINK_EXPORT WebString attributeLocalName(unsigned index) const;
     BLINK_EXPORT WebString attributeValue(unsigned index) const;
     BLINK_EXPORT unsigned attributeCount() const;
 
     // If this element takes up space in the layout of the page.
     BLINK_EXPORT bool hasNonEmptyLayoutSize() const;
 
     // Returns the bounds of the element in Visual Viewport. The bounds
     // have been adjusted to include any transformations, including page scale.
     // This function will update the layout if required.
-    BLINK_EXPORT WebRect boundsInViewport();
+    BLINK_EXPORT WebRect boundsInViewportInt();
+    BLINK_EXPORT WebFloatRect boundsInViewportFloat();
 
     // Returns the image contents of this element or a null WebImage
     // if there isn't any.
     BLINK_EXPORT WebImage imageContents();
 
 #if BLINK_IMPLEMENTATION
     WebElement(const PassRefPtrWillBeRawPtr<Element>&);
     WebElement& operator=(const PassRefPtrWillBeRawPtr<Element>&);
     operator PassRefPtrWillBeRawPtr<Element>() const;
 #endif
 };
 
 DECLARE_WEB_NODE_TYPE_CASTS(WebElement);
 
 } // namespace blink
 
 #endif