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

third_party/WebKit/Source/core/frame/FrameView.h

Index: third_party/WebKit/Source/core/frame/FrameView.h
diff --git a/third_party/WebKit/Source/core/frame/FrameView.h b/third_party/WebKit/Source/core/frame/FrameView.h
index ebfc224ae38a9c19793658a19a97a4c50725b3b3..7c3dd1e8a2cac2c252c6a34523ff74ae386f770d 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.h
+++ b/third_party/WebKit/Source/core/frame/FrameView.h
@@ -260,6 +260,7 @@ public:
     // Methods to convert points and rects between the coordinate space of the layoutObject, and this view.
     IntRect convertFromLayoutObject(const LayoutObject&, const IntRect&) const;
     IntRect convertToLayoutObject(const LayoutObject&, const IntRect&) const;
+    FloatRect convertFromLayoutObject(const LayoutObject&, const FloatRect&) const;
     IntPoint convertFromLayoutObject(const LayoutObject&, const IntPoint&) const;
     IntPoint convertToLayoutObject(const LayoutObject&, const IntPoint&) const;
 
@@ -457,9 +458,10 @@ public:
     IntRect contentsToRootFrame(const IntRect&) const;
 
     IntRect viewportToContents(const IntRect&) const;
+    IntPoint viewportToContents(const IntPoint&) const;
     IntRect contentsToViewport(const IntRect&) const;
+    FloatRect contentsToViewport(const FloatRect&) const;
     IntPoint contentsToViewport(const IntPoint&) const;
-    IntPoint viewportToContents(const IntPoint&) const;
 
     // FIXME: Some external callers expect to get back a rect that's positioned
     // in viewport space, but sized in CSS pixels. This is an artifact of the
@@ -473,7 +475,10 @@ public:
     // they are affected by scroll offset. Content coordinates are relative to the
     // document's top left corner and thus are not affected by scroll offset.
     IntPoint contentsToFrame(const IntPoint&) const;
+    FloatPoint contentsToFrame(const FloatPoint&) const;
     IntRect contentsToFrame(const IntRect&) const;
+    FloatRect contentsToFrame(const FloatRect&) const;
+
     IntPoint frameToContents(const IntPoint&) const;
     FloatPoint frameToContents(const FloatPoint&) const;
     IntRect frameToContents(const IntRect&) const;
@@ -510,6 +515,15 @@ public:
         return newPoint;
     }
 
+    FloatPoint convertChildToSelf(const Widget* child, const FloatPoint& point) const override
+    {
+        FloatPoint newPoint = point;
+        if (!isFrameViewScrollbar(child))
+            newPoint = contentsToFrame(point);
+        newPoint.moveBy(child->location());
+        return newPoint;
+    }
+
     // Widget override. Handles painting of the contents of the view as well as the scrollbars.
     void paint(GraphicsContext*, const CullRect&) const override;
     void paint(GraphicsContext*, const GlobalPaintFlags, const CullRect&) const;
@@ -526,6 +540,9 @@ public:
 
     IntRect convertFromScrollbarToContainingWidget(const Scrollbar*, const IntRect&) const override;
     IntRect convertFromContainingWidgetToScrollbar(const Scrollbar*, const IntRect&) const override;
+
+    FloatRect convertFromScrollbarToContainingWidget(const Scrollbar*, const FloatRect&) const override;
+
     IntPoint convertFromScrollbarToContainingWidget(const Scrollbar*, const IntPoint&) const override;
     IntPoint convertFromContainingWidgetToScrollbar(const Scrollbar*, const IntPoint&) const override;
 
@@ -667,6 +684,7 @@ private:
     // take transforms into account.
     IntRect convertToContainingWidget(const IntRect&) const override;
     IntRect convertFromContainingWidget(const IntRect&) const override;
+    FloatRect convertToContainingWidget(const FloatRect&) const override;
     IntPoint convertToContainingWidget(const IntPoint&) const override;
     IntPoint convertFromContainingWidget(const IntPoint&) const override;