Bug 1754851 - Remove Compositor::RecordFrame r=mstange

Differential Revision: https://phabricator.services.mozilla.com/D179304

gfx/layers/Compositor.cpp

@@ -233,23 +233,6 @@ size_t DecomposeIntoNoRepeatRects(const gfx::Rect& aRect,
   return 4;
 }
 
-already_AddRefed<RecordedFrame> Compositor::RecordFrame(
-    const TimeStamp& aTimeStamp) {
-  RefPtr<CompositingRenderTarget> renderTarget = GetWindowRenderTarget();
-  if (!renderTarget) {
-    return nullptr;
-  }
-
-  RefPtr<AsyncReadbackBuffer> buffer =
-      CreateAsyncReadbackBuffer(renderTarget->GetSize());
-
-  if (!ReadbackRenderTarget(renderTarget, buffer)) {
-    return nullptr;
-  }
-
-  return MakeAndAddRef<CompositorRecordedFrame>(aTimeStamp, std::move(buffer));
-}
-
 bool Compositor::ShouldRecordFrames() const {
   return profiler_feature_active(ProfilerFeature::Screenshots) || mRecordFrames;
 }

gfx/layers/Compositor.h

@@ -327,14 +327,6 @@ class Compositor : public TextureSourceProvider {
     mRecordFrames = aWillRecord;
   }
 
-  /**
-   * Record the current frame for readback by the |CompositionRecorder|.
-   *
-   * If this compositor does not support this feature, a null pointer is
-   * returned instead.
-   */
-  already_AddRefed<RecordedFrame> RecordFrame(const TimeStamp& aTimeStamp);
-
  protected:
   /**
    * Whether or not the compositor should be prepared to record frames. While