Stop using nested message loop for alert() and other JS dialogs

content/renderer/render_thread_impl.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_RENDERER_RENDER_THREAD_IMPL_H_
 #define CONTENT_RENDERER_RENDER_THREAD_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 206 matching lines @@
   cc::TaskGraphRunner* GetTaskGraphRunner() override;
   bool AreImageDecodeTasksEnabled() override;
   bool IsThreadedAnimationEnabled() override;
 
   // Synchronously establish a channel to the GPU plugin if not previously
   // established or if it has been lost (for example if the GPU plugin crashed).
   // If there is a pending asynchronous request, it will be completed by the
   // time this routine returns.
   scoped_refptr<gpu::GpuChannelHost> EstablishGpuChannelSync(CauseForGpuLaunch);
 
-  // This method modifies how the next message is sent.  Normally, when sending
-  // a synchronous message that runs a nested message loop, we need to suspend
-  // callbacks into WebKit.  This involves disabling timers and deferring
-  // resource loads.  However, there are exceptions when we need to customize
-  // the behavior.
-  void DoNotNotifyWebKitOfModalLoop();
-
   // True if we are running layout tests. This currently disables forwarding
   // various status messages to the console, skips network error pages, and
   // short circuits size update and focus events.
   bool layout_test_mode() const {
     return layout_test_mode_;
   }
   void set_layout_test_mode(bool layout_test_mode) {
     layout_test_mode_ = layout_test_mode;
   }
 
@@ skipping 330 matching lines @@
 
   // The count of hidden RenderWidgets running through this thread.
   int hidden_widget_count_;
 
   // The current value of the idle notification timer delay.
   int64_t idle_notification_delay_in_ms_;
 
   // The number of idle handler calls that skip sending idle notifications.
   int idle_notifications_to_skip_;
 
-  bool notify_webkit_of_modal_loop_;
   bool webkit_shared_timer_suspended_;
 
   // The following flag is used to control layout test specific behavior.
   bool layout_test_mode_;
 
   // Timer that periodically calls IdleHandler.
   base::RepeatingTimer idle_timer_;
 
   // The channel from the renderer process to the GPU process.
   scoped_refptr<gpu::GpuChannelHost> gpu_channel_;
@@ skipping 117 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(RenderThreadImpl);
 };
 
 #if defined(COMPILER_MSVC)
 #pragma warning(pop)
 #endif
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_RENDER_THREAD_IMPL_H_