Extend VideoControl to allow clients to request lossless modes.

remoting/host/video_scheduler.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 REMOTING_HOST_VIDEO_SCHEDULER_H_
 #define REMOTING_HOST_VIDEO_SCHEDULER_H_
 
 #include <vector>
 
 #include "base/basictypes.h"
@@ skipping 94 matching lines @@
   void Stop();
 
   // Pauses or resumes scheduling of frame captures.  Pausing/resuming captures
   // only affects capture scheduling and does not stop/start the capturer.
   void Pause(bool pause);
 
   // Updates the sequence number embedded in VideoPackets.
   // Sequence numbers are used for performance measurements.
   void UpdateSequenceNumber(int64 sequence_number);
 
+  // Sets whether the video encoder should be requested to encode losslessly,
+  // or to use a lossless color space (typically requiring higher bandwidth).
+  void SetLosslessEncode(bool want_lossless);
+  void SetLosslessColor(bool want_lossless);
+
  private:
   friend class base::RefCountedThreadSafe<VideoScheduler>;
   virtual ~VideoScheduler();
 
   // Capturer thread ----------------------------------------------------------
 
   // Starts the capturer on the capture thread.
   void StartOnCaptureThread();
 
   // Stops scheduling frame captures on the capture thread.
@@ skipping 65 matching lines @@
 
   // Set when the capturer is capturing a frame.
   bool capture_pending_;
 
   // True if the previous scheduled capture was skipped.
   bool did_skip_frame_;
 
   // True if capture of video frames is paused.
   bool is_paused_;
 
-  // This is a number updated by client to trace performance.
+  // Number updated by the caller to trace performance.
   int64 sequence_number_;
 
   // An object to schedule capturing.
   CaptureScheduler scheduler_;
 
   DISALLOW_COPY_AND_ASSIGN(VideoScheduler);
 };
 
 }  // namespace remoting
 
 #endif  // REMOTING_HOST_VIDEO_SCHEDULER_H_