OOPIF: Clear old focused frame when focus moves to a cross-process frame.

third_party/WebKit/Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1342 matching lines @@
         return;
     }
     frame()->inputMethodController().extendSelectionAndDelete(before, after);
 }
 
 void WebLocalFrameImpl::setCaretVisible(bool visible)
 {
     frame()->selection().setCaretVisible(visible);
 }
 
+void WebLocalFrameImpl::clearFocus()
+{
+    if (!frame()->page())
+        return;
+
+    // This uses setFocusedElement rather than setFocusedFrame so that blur
+    // events are properly dispatched on any currently focused elements.
+    frame()->page()->focusController().setFocusedElement(nullptr, nullptr);
+}
+
 VisiblePosition WebLocalFrameImpl::visiblePositionForViewportPoint(const WebPoint& pointInViewport)
 {
     return visiblePositionForContentsPoint(frame()->view()->viewportToContents(pointInViewport), frame());
 }
 
 WebPlugin* WebLocalFrameImpl::focusedPluginIfInputMethodSupported()
 {
     WebPluginContainerImpl* container = WebLocalFrameImpl::pluginContainerFromNode(frame(), WebNode(frame()->document()->focusedElement()));
     if (container && container->supportsInputMethod())
         return container->plugin();
@@ skipping 818 matching lines @@
 }
 
 WebSandboxFlags WebLocalFrameImpl::effectiveSandboxFlags() const
 {
     if (!frame())
         return WebSandboxFlags::None;
     return static_cast<WebSandboxFlags>(frame()->loader().effectiveSandboxFlags());
 }
 
 } // namespace blink