Send a Blur notification to the renderer if we receive a mouse exit for a window outside a popup.

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 
 #include "base/auto_reset.h"
 #include "base/basictypes.h"
@@ skipping 319 matching lines @@
 
   if (event->type() != ui::ET_MOUSE_PRESSED &&
       event->type() != ui::ET_TOUCH_PRESSED) {
     return;
   }
 
   aura::Window* target = static_cast<aura::Window*>(event->target());
   if (target != window_ &&
       (!popup_parent_host_view_ ||
        target != popup_parent_host_view_->window_)) {
+    // If we enter this code path it means that we did not receive any focus
+    // lost notifications for the popup window. Ensure that blink is aware
+    // of the fact that focus was lost for the host window by sending a Blur
+    // notification.
+    if (popup_parent_host_view_ && popup_parent_host_view_->host_)
+      popup_parent_host_view_->host_->Blur();
     // Note: popup_parent_host_view_ may be NULL when there are multiple
     // popup children per view. See: RenderWidgetHostViewAura::InitAsPopup().
     Shutdown();
   }
 }
 
 // We have to implement the WindowObserver interface on a separate object
 // because clang doesn't like implementing multiple interfaces that have
 // methods with the same name. This object is owned by the
 // RenderWidgetHostViewAura.
@@ skipping 2425 matching lines @@
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content