Improve detection of touch events when hiding media controls.

Source/web/WebViewImpl.cpp

Index: Source/web/WebViewImpl.cpp
diff --git a/Source/web/WebViewImpl.cpp b/Source/web/WebViewImpl.cpp
index a95346118a8a53bb327cf1173dcb3b3895635900..59e98600d652062aa54af4f6b08eaaf7f7884d66 100644
--- a/Source/web/WebViewImpl.cpp
+++ b/Source/web/WebViewImpl.cpp
@@ -3309,10 +3309,8 @@ void WebViewImpl::dragSourceEndedAt(
     const WebPoint& screenPoint,
     WebDragOperation operation)
 {
-    PlatformMouseEvent pme(clientPoint,
-                           screenPoint,
-                           LeftButton, PlatformEvent::MouseMoved, 0, false, false, false,
-                           false, 0);
+    PlatformMouseEvent pme(clientPoint, screenPoint, LeftButton, PlatformEvent::MouseMoved,
+        0, false, false, false, false, PlatformMouseEvent::RealOrIndistinguishable, 0);
     m_page->deprecatedLocalMainFrame()->eventHandler().dragSourceEndedAt(pme,
         static_cast<DragOperation>(operation));
 }