Revert of Delete webrtc::VideoFrame methods buffer and stride.

webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc

Index: webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
diff --git a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
index 0fd556c3411d0c133b2be144aeaae342de4ff3b9..9d06b6b1363b4d5bdf0cbd1cf48bca345a24ac63 100644
--- a/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
+++ b/webrtc/modules/video_coding/codecs/vp9/vp9_impl.cc
@@ -500,15 +500,12 @@
 
   // Image in vpx_image_t format.
   // Input image is const. VPX's raw image is not defined as const.
-  raw_->planes[VPX_PLANE_Y] =
-      const_cast<uint8_t*>(input_image.video_frame_buffer()->DataY());
-  raw_->planes[VPX_PLANE_U] =
-      const_cast<uint8_t*>(input_image.video_frame_buffer()->DataU());
-  raw_->planes[VPX_PLANE_V] =
-      const_cast<uint8_t*>(input_image.video_frame_buffer()->DataV());
-  raw_->stride[VPX_PLANE_Y] = input_image.video_frame_buffer()->StrideY();
-  raw_->stride[VPX_PLANE_U] = input_image.video_frame_buffer()->StrideU();
-  raw_->stride[VPX_PLANE_V] = input_image.video_frame_buffer()->StrideV();
+  raw_->planes[VPX_PLANE_Y] = const_cast<uint8_t*>(input_image.buffer(kYPlane));
+  raw_->planes[VPX_PLANE_U] = const_cast<uint8_t*>(input_image.buffer(kUPlane));
+  raw_->planes[VPX_PLANE_V] = const_cast<uint8_t*>(input_image.buffer(kVPlane));
+  raw_->stride[VPX_PLANE_Y] = input_image.stride(kYPlane);
+  raw_->stride[VPX_PLANE_U] = input_image.stride(kUPlane);
+  raw_->stride[VPX_PLANE_V] = input_image.stride(kVPlane);
 
   vpx_enc_frame_flags_t flags = 0;
   bool send_keyframe = (frame_type == kVideoFrameKey);