Don't wait to close tabs waiting for JavaScript dialogs.

content/browser/renderer_host/render_widget_host_delegate.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <vector>
@@ skipping 133 matching lines @@
   // renderer hang reported by RenderWidgetHostDelegate::RendererUnresponsive.
   // Only add values at the end, do not delete values.
   enum RendererUnresponsiveType {
     RENDERER_UNRESPONSIVE_UNKNOWN = 0,
     RENDERER_UNRESPONSIVE_IN_FLIGHT_EVENTS = 1,
     RENDERER_UNRESPONSIVE_DIALOG_CLOSED = 2,
     RENDERER_UNRESPONSIVE_DIALOG_SUPPRESSED = 3,
     RENDERER_UNRESPONSIVE_BEFORE_UNLOAD = 4,
     RENDERER_UNRESPONSIVE_UNLOAD = 5,
     RENDERER_UNRESPONSIVE_CLOSE_PAGE = 6,
-    RENDERER_UNRESPONSIVE_MAX = RENDERER_UNRESPONSIVE_CLOSE_PAGE,
+    RENDERER_UNRESPONSIVE_DIALOG_SHOWING = 7,

[Charlie Reis, 2016/10/08 00:20:27]

Don't need this anymore.

[Avi (use Gerrit), 2016/10/08 00:44:24]

Done.

+    RENDERER_UNRESPONSIVE_MAX = RENDERER_UNRESPONSIVE_DIALOG_SHOWING,
   };
 
   // Notification that the renderer has become unresponsive. The
   // delegate can use this notification to show a warning to the user.
   virtual void RendererUnresponsive(RenderWidgetHostImpl* render_widget_host,
                                     RendererUnresponsiveType type) {}
 
   // Notification that a previously unresponsive renderer has become
   // responsive again. The delegate can use this notification to end the
   // warning shown to the user.
@@ skipping 52 matching lines @@
   // this RenderWidgetHost.
   virtual bool IsHidden();
 
  protected:
   virtual ~RenderWidgetHostDelegate() {}
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_DELEGATE_H_