Enable cc_perftests, gpu_perftests, and tracing_perftests on Nexus 5X Perf

tools/perf/core/perf_data_generator.py

Index: tools/perf/core/perf_data_generator.py
diff --git a/tools/perf/core/perf_data_generator.py b/tools/perf/core/perf_data_generator.py
index 8318c41bc31bd0789ae0baf1db508d162ab9414a..b36f51cc7065f6285fa702b2029378771e740b8b 100755
--- a/tools/perf/core/perf_data_generator.py
+++ b/tools/perf/core/perf_data_generator.py
@@ -259,7 +259,12 @@ def get_waterfall_config():
            'build75-b1--device1', 'build75-b1--device2', 'build75-b1--device3',
            'build75-b1--device4', 'build75-b1--device5', 'build75-b1--device6',
            'build75-b1--device7',
-          ]
+          ],
+       'perf_tests': [
+         ('tracing_perftests', 'build73-b1--device2'),

[nednguyen, 2017/05/08 23:56:32]

The 'build73-b1--device2' bot is picked because it's the least loaded one.

+         ('gpu_perftests', 'build73-b1--device2'),
+         ('cc_perftests', 'build73-b1--device2'),
+         ]
       }
     ])