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

components/autofill/core/browser/autofill_driver.h

Index: components/autofill/core/browser/autofill_driver.h
diff --git a/components/autofill/core/browser/autofill_driver.h b/components/autofill/core/browser/autofill_driver.h
index 82e0f1244a621b6d7d72a1b94e1a1e7ae66d90f8..cbead5723776025071ac6f80d0e5065a6a897461 100644
--- a/components/autofill/core/browser/autofill_driver.h
+++ b/components/autofill/core/browser/autofill_driver.h
@@ -17,6 +17,10 @@ namespace net {
 class URLRequestContextGetter;
 }
 
+namespace gfx {
+class RectF;
+}
+
 namespace autofill {
 
 class FormStructure;
@@ -89,6 +93,12 @@ class AutofillDriver {
 
   // Informs the renderer that the popup has been hidden.
   virtual void PopupHidden() = 0;
+
+  // Transform bounding box coordinates to real viewport coordinates. In
+  // the case of a page spanning multiple renderer processes, subframe
+  // renderers cannot do this transformation themselves.
+  virtual gfx::RectF TransformBoundingBoxToViewportCoordinates(
+      const gfx::RectF& bounding_box) = 0;
 };
 
 }  // namespace autofill