[DevTools] Handle emulation in embedder, call into web API.

content/renderer/external_popup_menu.cc

Index: content/renderer/external_popup_menu.cc
diff --git a/content/renderer/external_popup_menu.cc b/content/renderer/external_popup_menu.cc
index 3a635e528d3b2257d37c5c87a71d0e4dad8ef8fb..f2363e31b53cadf397be04cc0eb9e0ee3280447f 100644
--- a/content/renderer/external_popup_menu.cc
+++ b/content/renderer/external_popup_menu.cc
@@ -23,7 +23,7 @@ ExternalPopupMenu::ExternalPopupMenu(
 }
 
 void ExternalPopupMenu::SetOriginScaleAndOffsetForEmulation(
-    float scale, const gfx::Point& offset) {
+    float scale, const gfx::PointF& offset) {
   origin_scale_for_emulation_ = scale;
   origin_offset_for_emulation_ = offset;
 }