1 files changed, 8 insertions, 7 deletions
diff --git a/third_party/libwebrtc/api/frame_transformer_interface.h b/third_party/libwebrtc/api/frame_transformer_interface.h
index d1ea15a54e..afa79b92ea 100644
--- a/third_party/libwebrtc/api/frame_transformer_interface.h
+++ b/third_party/libwebrtc/api/frame_transformer_interface.h
@@ -13,12 +13,11 @@
 
 #include <memory>
 #include <string>
-#include <vector>
 
+#include "api/ref_count.h"
 #include "api/scoped_refptr.h"
 #include "api/video/encoded_frame.h"
 #include "api/video/video_frame_metadata.h"
-#include "rtc_base/ref_count.h"
 
 namespace webrtc {
 
@@ -54,11 +53,7 @@ class TransformableFrameInterface {
   // sender frames to allow received frames to be directly re-transmitted on
   // other PeerConnectionss.
   virtual Direction GetDirection() const { return Direction::kUnknown; }
-  virtual std::string GetMimeType() const {
-    // TODO(bugs.webrtc.org/15579): Change this to pure virtual after it
-    // is implemented everywhere.
-    return "unknown/unknown";
-  }
+  virtual std::string GetMimeType() const = 0;
 };
 
 class TransformableVideoFrameInterface : public TransformableFrameInterface {
@@ -100,6 +95,12 @@ class TransformedFrameCallback : public rtc::RefCountInterface {
   virtual void OnTransformedFrame(
       std::unique_ptr<TransformableFrameInterface> frame) = 0;
 
+  // Request to no longer be called on each frame, instead having frames be
+  // sent directly to OnTransformedFrame without additional work.
+  // TODO(crbug.com/1502781): Make pure virtual once all mocks have
+  // implementations.
+  virtual void StartShortCircuiting() {}
+
  protected:
   ~TransformedFrameCallback() override = default;
 };