scheduler: Detect load RAIL mode

third_party/WebKit/public/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 "WebCommon.h"
 
 #include <string>
@@ skipping 45 matching lines @@
   virtual void didStartLoading(unsigned long identifier) {}
 
   // Tells the scheduler a resource load has stopped. The scheduler may make
   // policy decisions based on this.
   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() {}
 };
 
 }  // namespace blink
 
 #endif  // WebFrameScheduler_h