End the drag and drop operation properly.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index c6817b4ae8e528f7307e9ec343371bb4e5981827..70ac69daf2195b6d5b95b343415845f450730b70 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -1010,8 +1010,11 @@ void RenderViewHostImpl::OnStartDragging(
     const gfx::Vector2d& bitmap_offset_in_dip,
     const DragEventSourceInfo& event_info) {
   RenderViewHostDelegateView* view = delegate_->GetDelegateView();
-  if (!view)
+  if (!view) {
+    // Need to clear drag and drop state in blink.
+    DragSourceSystemDragEnded();
     return;
+  }
 
   DropData filtered_data(drop_data);
   RenderProcessHost* process = GetProcess();