Position autofill popup widgets correctly under --site-per-process

content/public/browser/render_widget_host_view.h

Index: content/public/browser/render_widget_host_view.h
diff --git a/content/public/browser/render_widget_host_view.h b/content/public/browser/render_widget_host_view.h
index 9b48ddba29d99835e1c994a8e5c068ad2a7fc9b4..7c749a27c696c887341584ac9b1213352fb56a9e 100644
--- a/content/public/browser/render_widget_host_view.h
+++ b/content/public/browser/render_widget_host_view.h
@@ -65,6 +65,19 @@ class CONTENT_EXPORT RenderWidgetHostView {
   // Retrieves the last known scroll position.
   virtual gfx::Vector2dF GetLastScrollOffset() const = 0;
 
+  // Coordinate points received from a renderer process need to be transformed
+  // to the top-level frame's coordinate space. For coordinates received from
+  // the top-level frame's renderer this is a no-op as they are already
+  // properly transformed; however, coordinates received from an out-of-process
+  // iframe renderer process require transformation.
+  virtual gfx::Point TransformPointToRootCoordSpace(
+      const gfx::Point& point) = 0;
+
+  // A floating point variant of the above. PointF values will be snapped to
+  // integral points before transformation.
+  virtual gfx::PointF TransformPointToRootCoordSpaceF(
+      const gfx::PointF& point) = 0;
+
   // Retrieves the native view used to contain plugins and identify the
   // renderer in IPC messages.
   virtual gfx::NativeView GetNativeView() const = 0;