Delete unused and almost unused frame-related methods.

webrtc/modules/video_processing/spatial_resampler.cc

Index: webrtc/modules/video_processing/spatial_resampler.cc
diff --git a/webrtc/modules/video_processing/spatial_resampler.cc b/webrtc/modules/video_processing/spatial_resampler.cc
index 74a570fb07822694c407d478ff39b98987d9ca7d..7c4aae20888d104c53c1989dac1061d72330635d 100644
--- a/webrtc/modules/video_processing/spatial_resampler.cc
+++ b/webrtc/modules/video_processing/spatial_resampler.cc
@@ -58,10 +58,10 @@ int32_t VPMSimpleSpatialResampler::ResampleFrame(const VideoFrame& inFrame,
 
   scaled_buffer->CropAndScaleFrom(inFrame.video_frame_buffer());
 
-  outFrame->set_video_frame_buffer(scaled_buffer);
-  // Setting time parameters to the output frame.
-  outFrame->set_timestamp(inFrame.timestamp());
-  outFrame->set_render_time_ms(inFrame.render_time_ms());
+  *outFrame = VideoFrame(scaled_buffer,
+                         inFrame.timestamp(),
+                         inFrame.render_time_ms(),
+                         inFrame.rotation());
 
   return VPM_OK;
 }