[Mojo Video Capture] Replace RESOURCE_UTILIZATION with interface ReceiverLoadObserver

media/capture/content/video_capture_oracle.h

 // Copyright (c) 2013 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 MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_
 #define MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_
 
 #include "base/callback_forward.h"
 #include "base/time/time.h"
 #include "media/base/feedback_signal_accumulator.h"
@@ skipping 32 matching lines @@
   void SetSourceSize(const gfx::Size& source_size);
 
   // Record a event of type |event|, and decide whether the caller should do a
   // frame capture.  |damage_rect| is the region of a frame about to be drawn,
   // and may be an empty Rect, if this is not known.  If the caller accepts the
   // oracle's proposal, it should call RecordCapture() to indicate this.
   bool ObserveEventAndDecideCapture(Event event,
                                     const gfx::Rect& damage_rect,
                                     base::TimeTicks event_time);
 
+  // Returns the |frame_number| to be used with CompleteCapture().
+  int next_frame_number() const;
+
   // Record and update internal state based on whether the frame capture will be
   // started.  |pool_utilization| is a value in the range 0.0 to 1.0 to indicate
   // the current buffer pool utilization relative to a sustainable maximum (not
   // the absolute maximum).  This method should only be called if the last call
-  // to ObserveEventAndDecideCapture() returned true.  The first method returns
-  // the |frame_number| to be used with CompleteCapture().
-  int RecordCapture(double pool_utilization);
+  // to ObserveEventAndDecideCapture() returned true.
+  void RecordCapture(double pool_utilization);
   void RecordWillNotCapture(double pool_utilization);
 
   // Notify of the completion of a capture, and whether it was successful.
   // Returns true iff the captured frame should be delivered.  |frame_timestamp|
   // is set to the timestamp that should be provided to the consumer of the
   // frame.
   bool CompleteCapture(int frame_number,
                        bool capture_was_successful,
                        base::TimeTicks* frame_timestamp);
 
@@ skipping 126 matching lines @@
 
   // The timestamp of the frame where |content_sampler_| last detected
   // animation.  This determines whether capture size increases will be
   // aggressive (because content is not animating).
   base::TimeTicks last_time_animation_was_detected_;
 };
 
 }  // namespace media
 
 #endif  // MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_