Revert 276603 "Cast: Synthetic benchmark tool."

trunk/src/media/cast/video_sender/fake_software_video_encoder.cc

Index: trunk/src/media/cast/video_sender/fake_software_video_encoder.cc
===================================================================
--- trunk/src/media/cast/video_sender/fake_software_video_encoder.cc	(revision 276619)
+++ trunk/src/media/cast/video_sender/fake_software_video_encoder.cc	(working copy)
@@ -45,9 +45,8 @@
   values.SetInteger("ref", encoded_image->referenced_frame_id);
   values.SetInteger("id", encoded_image->frame_id);
   values.SetInteger("size", frame_size_);
+  values.SetString("data", std::string(frame_size_, ' '));
   base::JSONWriter::Write(&values, &encoded_image->data);
-  encoded_image->data.resize(
-      std::max<size_t>(encoded_image->data.size(), frame_size_));
   return true;
 }