Convert JsonWriter::Write to taking a const ref for the in-param

media/cast/sender/fake_software_video_encoder.cc

Index: media/cast/sender/fake_software_video_encoder.cc
diff --git a/media/cast/sender/fake_software_video_encoder.cc b/media/cast/sender/fake_software_video_encoder.cc
index 7a2a333153e11eaa34b67ad93e44c335040627d9..0cd01396fa911f7f68c29b1c827087a582fa60af 100644
--- a/media/cast/sender/fake_software_video_encoder.cc
+++ b/media/cast/sender/fake_software_video_encoder.cc
@@ -57,7 +57,7 @@ void FakeSoftwareVideoEncoder::Encode(
   values.SetInteger("ref", encoded_frame->referenced_frame_id);
   values.SetInteger("id", encoded_frame->frame_id);
   values.SetInteger("size", frame_size_);
-  base::JSONWriter::Write(&values, &encoded_frame->data);
+  base::JSONWriter::Write(values, &encoded_frame->data);
   encoded_frame->data.resize(
       std::max<size_t>(encoded_frame->data.size(), frame_size_), ' ');
 }