Report Unique_frames_count from frame_analyzer using 'score' units.

webrtc/tools/frame_analyzer/video_quality_analysis.cc

Index: webrtc/tools/frame_analyzer/video_quality_analysis.cc
diff --git a/webrtc/tools/frame_analyzer/video_quality_analysis.cc b/webrtc/tools/frame_analyzer/video_quality_analysis.cc
index dfd57f196132040ee781cf81ae46aba1536858aa..b28a5d2def5d2bcd3360aec54427e6d0c0a4bdec 100644
--- a/webrtc/tools/frame_analyzer/video_quality_analysis.cc
+++ b/webrtc/tools/frame_analyzer/video_quality_analysis.cc
@@ -351,7 +351,7 @@ void PrintAnalysisResults(FILE* output, const std::string& label,
                           ResultsContainer* results) {
   std::vector<AnalysisResult>::iterator iter;
 
-  fprintf(output, "RESULT Unique_frames_count: %s= %u\n", label.c_str(),
+  fprintf(output, "RESULT Unique_frames_count: %s= %u score\n", label.c_str(),
           static_cast<unsigned int>(results->frames.size()));
 
   if (results->frames.size() > 0u) {