Revert of Change VirtualTimePolicy::PAUSE_IF_NETWORK_FETCHES_PENDING

components/scheduler/renderer/web_view_scheduler_impl.h

 // Copyright 2015 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 COMPONENTS_SCHEDULER_RENDERER_WEB_VIEW_SCHEDULER_IMPL_H_
 #define COMPONENTS_SCHEDULER_RENDERER_WEB_VIEW_SCHEDULER_IMPL_H_
 
 #include <memory>
 #include <set>
 #include <string>
 
 #include "base/macros.h"
 #include "components/scheduler/base/task_queue.h"
 #include "components/scheduler/scheduler_export.h"
 #include "third_party/WebKit/public/platform/WebViewScheduler.h"
 
 namespace base {
 namespace trace_event {
 class BlameContext;
 }  // namespace trace_event
 class SingleThreadTaskRunner;
 }  // namespace base
 
 namespace blink {
 class WebView;
 }  // namespace blink
 
 namespace scheduler {
 
+class AutoAdvancingVirtualTimeDomain;
 class RendererSchedulerImpl;
 class WebFrameSchedulerImpl;
 
 class SCHEDULER_EXPORT WebViewSchedulerImpl : public blink::WebViewScheduler {
  public:
   WebViewSchedulerImpl(blink::WebView* web_view,
                        RendererSchedulerImpl* renderer_scheduler,
                        bool disable_background_timer_throttling);
 
   ~WebViewSchedulerImpl() override;
 
   // blink::WebViewScheduler implementation:
   void setPageVisible(bool page_visible) override;
   std::unique_ptr<blink::WebFrameScheduler> createFrameScheduler(
       blink::BlameContext* blame_context) override;
   void enableVirtualTime() override;
   bool virtualTimeAllowedToAdvance() const override;
   void setVirtualTimePolicy(VirtualTimePolicy virtual_time_policy) override;
 
   // Virtual for testing.
   virtual void AddConsoleWarning(const std::string& message);
 
   std::unique_ptr<WebFrameSchedulerImpl> createWebFrameSchedulerImpl(
       base::trace_event::BlameContext* blame_context);
 
   void DidStartLoading(unsigned long identifier);
   void DidStopLoading(unsigned long identifier);
   void IncrementBackgroundParserCount();
   void DecrementBackgroundParserCount();
+
+ private:
+  friend class WebFrameSchedulerImpl;
+
   void Unregister(WebFrameSchedulerImpl* frame_scheduler);
 
- private:
+  AutoAdvancingVirtualTimeDomain* virtual_time_domain() const {
+    return virtual_time_domain_.get();
+  }
+
   void setAllowVirtualTimeToAdvance(bool allow_virtual_time_to_advance);
   void ApplyVirtualTimePolicy();
 
   std::set<WebFrameSchedulerImpl*> frame_schedulers_;
   std::set<unsigned long> pending_loads_;
+  std::unique_ptr<AutoAdvancingVirtualTimeDomain> virtual_time_domain_;
+  TaskQueue::PumpPolicy virtual_time_pump_policy_;
   blink::WebView* web_view_;
   RendererSchedulerImpl* renderer_scheduler_;
   VirtualTimePolicy virtual_time_policy_;
   int background_parser_count_;
   bool page_visible_;
   bool disable_background_timer_throttling_;
   bool allow_virtual_time_to_advance_;
-  bool have_seen_loading_task_;
-  bool virtual_time_;
 
   DISALLOW_COPY_AND_ASSIGN(WebViewSchedulerImpl);
 };
 
 }  // namespace scheduler
 
 #endif  // COMPONENTS_SCHEDULER_RENDERER_WEB_VIEW_SCHEDULER_IMPL_H_