[scheduler] Plumb websocket information to scheduler

third_party/WebKit/Source/platform/WebFrameScheduler.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 WebFrameScheduler_h
 #define WebFrameScheduler_h
 
 #include "wtf/RefPtr.h"
 
+#include <memory>
+
 namespace blink {
 
 class WebTaskRunner;
 class WebViewScheduler;
 
 class WebFrameScheduler {
  public:
   virtual ~WebFrameScheduler() {}
 
+  class ActiveConnectionHandle {
+   public:
+    ActiveConnectionHandle() {}
+    virtual ~ActiveConnectionHandle() {}
+
+   private:
+    DISALLOW_COPY_AND_ASSIGN(ActiveConnectionHandle);
+  };
+
   // The scheduler may throttle tasks associated with offscreen frames.
   virtual void setFrameVisible(bool) {}
 
   // Tells the scheduler that the page this frame belongs to supposed to be
   // throttled (because it's not been visible for a few seconds).
   virtual void setPageThrottled(bool) {}
 
   // Set whether this frame is suspended. Only unthrottledTaskRunner tasks are
   // allowed to run on a suspended frame.
   virtual void setSuspended(bool) {}
@@ skipping 31 matching lines @@
   virtual void didStopLoading(unsigned long identifier) {}
 
   // Tells the scheduler if we are parsing a document on another thread. This
   // tells the scheduler not to advance virtual time if it's using the
   // DETERMINISTIC_LOADING policy.
   virtual void setDocumentParsingInBackground(bool) {}
 
   // Tells the scheduler that the first meaningful paint has occured for this
   // frame.
   virtual void onFirstMeaningfulPaint() {}
+
+  // Notifies scheduler that this frame has established an active real time
+  // connection (websocket, webrtc, etc). When connection is closed this handle
+  // must be destroyed.
+  virtual std::unique_ptr<ActiveConnectionHandle> onActiveConnectionCreated() {
+    return nullptr;
+  };
 };
 
 }  // namespace blink
 
 #endif  // WebFrameScheduler_h