INPUT element: Do not dispatch events in detachLayoutTree().

third_party/WebKit/Source/web/WebPagePopupImpl.cpp

Index: third_party/WebKit/Source/web/WebPagePopupImpl.cpp
diff --git a/third_party/WebKit/Source/web/WebPagePopupImpl.cpp b/third_party/WebKit/Source/web/WebPagePopupImpl.cpp
index 7a9d696d6a124aa000f0dff8f5159a5281a70f2b..e41a86be8aa332207b6cdbbe12332332e7578a89 100644
--- a/third_party/WebKit/Source/web/WebPagePopupImpl.cpp
+++ b/third_party/WebKit/Source/web/WebPagePopupImpl.cpp
@@ -518,26 +518,27 @@ void WebPagePopupImpl::close() {
 }
 
 void WebPagePopupImpl::closePopup() {
-  // This function can be called in EventDispatchForbiddenScope for the main
-  // document, and the following operations dispatch some events.  It's safe
-  // because web authors can't listen the events.
-  EventDispatchForbiddenScope::AllowUserAgentEvents allowEvents;
-
-  if (m_page) {
-    toLocalFrame(m_page->mainFrame())->loader().stopAllLoaders();
-    PagePopupSupplement::uninstall(*toLocalFrame(m_page->mainFrame()));
-  }
-  bool closeAlreadyCalled = m_closing;
-  m_closing = true;
+  {
+    // This function can be called in EventDispatchForbiddenScope for the main
+    // document, and the following operations dispatch some events.  It's safe
+    // because web authors can't listen the events.
+    EventDispatchForbiddenScope::AllowUserAgentEvents allowEvents;
+
+    if (m_page) {
+      toLocalFrame(m_page->mainFrame())->loader().stopAllLoaders();
+      PagePopupSupplement::uninstall(*toLocalFrame(m_page->mainFrame()));
+    }
+    bool closeAlreadyCalled = m_closing;
+    m_closing = true;
 
-  destroyPage();
+    destroyPage();
 
-  // m_widgetClient might be 0 because this widget might be already closed.
-  if (m_widgetClient && !closeAlreadyCalled) {
-    // closeWidgetSoon() will call this->close() later.
-    m_widgetClient->closeWidgetSoon();
+    // m_widgetClient might be 0 because this widget might be already closed.
+    if (m_widgetClient && !closeAlreadyCalled) {
+      // closeWidgetSoon() will call this->close() later.
+      m_widgetClient->closeWidgetSoon();
+    }
   }
-
   m_popupClient->didClosePopup();
   m_webView->cleanupPagePopup();
 }