cast: Support for low-latency interactive mode

media/capture/content/video_capture_oracle.h

Index: media/capture/content/video_capture_oracle.h
diff --git a/media/capture/content/video_capture_oracle.h b/media/capture/content/video_capture_oracle.h
index aff9745295118330e1406f168b5ce4f3526e929c..09c1407b6be6d53d4b45322ce851cb4dab3d0928 100644
--- a/media/capture/content/video_capture_oracle.h
+++ b/media/capture/content/video_capture_oracle.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef MEDIA_CAPTURE_VIDEO_CAPTURE_ORACLE_H_
-#define MEDIA_CAPTURE_VIDEO_CAPTURE_ORACLE_H_
+#ifndef MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_
+#define MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_
 
 #include "base/callback_forward.h"
 #include "base/memory/scoped_ptr.h"
@@ -98,6 +98,9 @@ class MEDIA_EXPORT VideoCaptureOracle {
   // changes to the capture size, to avoid stressing the end-to-end pipeline.
   gfx::Size capture_size() const { return capture_size_; }
 
+  // Returns the oracle's estimate of animation content currently being active.
+  bool IsAnimationActive() const;
+
  private:
   // Retrieve/Assign a frame timestamp by capture |frame_number|.  Only valid
   // when IsFrameInRecentHistory(frame_number) returns true.
@@ -199,4 +202,4 @@ class MEDIA_EXPORT VideoCaptureOracle {
 
 }  // namespace media
 
-#endif  // MEDIA_CAPTURE_VIDEO_CAPTURE_ORACLE_H_
+#endif  // MEDIA_CAPTURE_CONTENT_VIDEO_CAPTURE_ORACLE_H_