Make Paste Popup use selection rect for positioning

third_party/WebKit/public/web/WebContextMenuData.h

Index: third_party/WebKit/public/web/WebContextMenuData.h
diff --git a/third_party/WebKit/public/web/WebContextMenuData.h b/third_party/WebKit/public/web/WebContextMenuData.h
index e23775101e1a928f0aeb7bd5dc218235d7c36682..d13c19972210bf73eae52e614661896902fb2b89 100644
--- a/third_party/WebKit/public/web/WebContextMenuData.h
+++ b/third_party/WebKit/public/web/WebContextMenuData.h
@@ -39,6 +39,7 @@
 #include "../platform/WebVector.h"
 #include "WebHistoryItem.h"
 #include "WebMenuItemInfo.h"
+#include "public/platform/WebRect.h"
 
 #define WEBCONTEXT_MEDIATYPEFILE_DEFINED
 
@@ -189,6 +190,9 @@ struct WebContextMenuData {
   // Custom context menu items provided by the WebCore internals.
   WebVector<WebMenuItemInfo> custom_items;
 
+  // Selection in viewport coordinates.
+  WebRect selection_rect;
+
   WebContextMenuData()
       : media_type(kMediaTypeNone),
         has_image_contents(false),