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/browser/alloy/browser_platform_delegate_alloy.cc

@@ -261,12 +261,15 @@ void CefBrowserPlatformDelegateAlloy::SendCaptureLostEvent() {
 
 #if BUILDFLAG(IS_WIN) || (BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_MAC))
 void CefBrowserPlatformDelegateAlloy::NotifyMoveOrResizeStarted() {
-  if (!web_contents_) {
+  if (!browser_) {
     return;
   }
 
   // Dismiss any existing popups.
-  web_contents_->ClearFocusedElement();
+  auto frame = browser_->GetMainFrame();
+  if (frame && frame->IsValid()) {
+    static_cast<CefFrameHostImpl*>(frame.get())->NotifyMoveOrResizeStarted();
+  }
 }
 #endif
 

libcef/browser/frame_host_impl.cc

@@ -304,6 +304,13 @@ void CefFrameHostImpl::RefreshAttributes() {
   }
 }
 
+void CefFrameHostImpl::NotifyMoveOrResizeStarted() {
+  SendToRenderFrame(__FUNCTION__,
+                    base::BindOnce([](const RenderFrameType& render_frame) {
+                      render_frame->MoveOrResizeStarted();
+                    }));
+}
+
 void CefFrameHostImpl::LoadRequest(cef::mojom::RequestParamsPtr params) {
   if (!url_util::FixupGURL(params->url)) {
     return;

libcef/browser/frame_host_impl.h

@@ -82,6 +82,10 @@ class CefFrameHostImpl : public CefFrame, public cef::mojom::BrowserFrame {
   void SetFocused(bool focused);
   void RefreshAttributes();
 
+  // Notification that a move or resize of the renderer's containing window has
+  // started. Used on Windows and Linux with the Alloy runtime.
+  void NotifyMoveOrResizeStarted();
+
   // Load the specified request.
   void LoadRequest(cef::mojom::RequestParamsPtr params);
 

libcef/common/mojom/cef.mojom

@@ -79,6 +79,10 @@ interface RenderFrame {
 
   // Loading has stopped.
   DidStopLoading();
+
+  // Move or resize of the renderer's containing window has started. Used on
+  // Windows and Linux with the Alloy runtime.
+  MoveOrResizeStarted();
 };
 
 // Interface for communicating with a frame in the browser process.

libcef/renderer/frame_impl.cc

@@ -832,6 +832,14 @@ void CefFrameImpl::DidStopLoading() {
   }
 }
 
+void CefFrameImpl::MoveOrResizeStarted() {
+  if (frame_) {
+    auto web_view = frame_->View();
+    if (web_view)
+      web_view->CancelPagePopup();
+  }
+}
+
 void CefFrameImpl::ContextLifecycleStateChanged(
     blink::mojom::blink::FrameLifecycleState state) {
   if (state == blink::mojom::FrameLifecycleState::kFrozen && IsMain() &&

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(