Add WebDragData to blink::WebView::dragtargetDrop

content/browser/web_contents/web_drag_dest_mac.mm

Index: content/browser/web_contents/web_drag_dest_mac.mm
diff --git a/content/browser/web_contents/web_drag_dest_mac.mm b/content/browser/web_contents/web_drag_dest_mac.mm
index ec674126d52e2831d6bdb16b072d83969e3f19c6..5296c2ca2c0e503c5120dcdbd1fe3dcc52960124 100644
--- a/content/browser/web_contents/web_drag_dest_mac.mm
+++ b/content/browser/web_contents/web_drag_dest_mac.mm
@@ -252,9 +252,8 @@ int GetModifierFlags() {
   NSPoint viewPoint = [self flipWindowPointToView:windowPoint view:view];
   NSPoint screenPoint = [self flipWindowPointToScreen:windowPoint view:view];
   webContents_->GetRenderViewHost()->DragTargetDrop(
-      gfx::Point(viewPoint.x, viewPoint.y),
-      gfx::Point(screenPoint.x, screenPoint.y),
-      GetModifierFlags());
+      DropData(), gfx::Point(viewPoint.x, viewPoint.y),
+      gfx::Point(screenPoint.x, screenPoint.y), GetModifierFlags());
 
   dropData_.reset();
 
@@ -270,6 +269,7 @@ int GetModifierFlags() {
   DCHECK(pboard);
   NSArray* types = [pboard types];
 
+  data->is_valid = true;
   data->did_originate_from_renderer =
       [types containsObject:ui::kChromeDragDummyPboardType];