Send NPAPI focus messages when web contents is blurred or focused

Source/core/html/HTMLPlugInElement.cpp

Index: Source/core/html/HTMLPlugInElement.cpp
diff --git a/Source/core/html/HTMLPlugInElement.cpp b/Source/core/html/HTMLPlugInElement.cpp
index d57dbf011482ce04e1963674130255f894d2e3bc..59312d7f0b222b36f2af8394e34bee856f0c265c 100644
--- a/Source/core/html/HTMLPlugInElement.cpp
+++ b/Source/core/html/HTMLPlugInElement.cpp
@@ -441,6 +441,14 @@ NPObject* HTMLPlugInElement::getNPObject()
     return m_NPObject;
 }
 
+void HTMLPlugInElement::setPluginFocus(bool focused)
+{
+    Widget* focusedWidget = existingPluginWidget();
+    // NPAPI flash requires to receive messages when web contents focus changes.
+    if (getNPObject() && focusedWidget)
+        focusedWidget->setFocus(focused, WebFocusTypeNone);
+}
+
 bool HTMLPlugInElement::isImageType()
 {
     if (m_serviceType.isEmpty() && protocolIs(m_url, "data"))