Convert printing in video quality tests to Chromium's perf format.

Add support for --label flag to the frame_analyzer, that
decides what label shall be used for the perf output.

BUG=none
TEST=
Make sure to have zxing and ffmpeg in the PATH.
Create a captured video (from running vie_auto_test custom call)
webrtc/tools/compare_videos.py --ref_video=reference_video.yuv --test_video=captured_output.yuv --frame_analyzer=out/Release/frame_analyzer --label=TEST_VGA
And then inspecting the output that is prefixed with RESULT.

R=phoglund@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2190005

git-svn-id: http://webrtc.googlecode.com/svn/trunk/webrtc@4714 4adac7df-926f-26a2-2b94-8c16560cd09d
diff --git a/tools/tools.gyp b/tools/tools.gyp
index 04ebd5e..386f025 100644
--- a/tools/tools.gyp
+++ b/tools/tools.gyp
@@ -113,6 +113,7 @@
           'type': '<(gtest_target_type)',
           'dependencies': [
             'frame_editing_lib',
+            'video_quality_analysis',
             '<(webrtc_root)/tools/internal_tools.gyp:command_line_parser',
             '<(webrtc_root)/test/test.gyp:test_support_main',
             '<(DEPTH)/testing/gtest.gyp:gtest',
@@ -120,6 +121,7 @@
           'sources': [
             'simple_command_line_parser_unittest.cc',
             'frame_editing/frame_editing_unittest.cc',
+            'frame_analyzer/video_quality_analysis_unittest.cc',
           ],
           # Disable warnings to enable Win64 build, issue 1323.
           'msvs_disabled_warnings': [