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

third_party/WebKit/Source/core/dom/Element.h

Index: third_party/WebKit/Source/core/dom/Element.h
diff --git a/third_party/WebKit/Source/core/dom/Element.h b/third_party/WebKit/Source/core/dom/Element.h
index 55f3688d63f4fa3e4a221a40212eaa387ba417d0..5886add3eb315c0dafbc3988e2a0242465503a50 100644
--- a/third_party/WebKit/Source/core/dom/Element.h
+++ b/third_party/WebKit/Source/core/dom/Element.h
@@ -211,7 +211,8 @@ public:
     void scrollTo(double x, double y);
     virtual void scrollTo(const ScrollToOptions&);
 
-    IntRect boundsInViewport();
+    IntRect boundsInViewportInt();
+    FloatRect boundsInViewportFloat();
 
     ClientRectList* getClientRects();
     ClientRect* getBoundingClientRect();
@@ -694,6 +695,8 @@ private:
     void detachAttrNodeFromElementWithValue(Attr*, const AtomicString& value);
     void detachAttrNodeAtIndex(Attr*, size_t index);
 
+    bool getBoundingQuads(Vector<FloatQuad>&);
+
     v8::Local<v8::Object> wrapCustomElement(v8::Isolate*, v8::Local<v8::Object> creationContext);
 
     RefPtrWillBeMember<ElementData> m_elementData;