Revert "Fix dismissal of select popups on NotifyMoveOrResizeStarted (see issue #3294)"

This reverts commit 5f4bccd672.

Reason for revert: This change causes a native parented browser to lose focus
on move (fixes issue #3426).

libcef/renderer/frame_impl.h

@@ -162,6 +162,7 @@ class CefFrameImpl
                       int32_t startLine) override;
   void LoadRequest(cef::mojom::RequestParamsPtr params) override;
   void DidStopLoading() override;
+  void MoveOrResizeStarted() override;
 
   // blink_glue::CefExecutionContextLifecycleStateObserver methods:
   void ContextLifecycleStateChanged(