[telemetry] Prototype for specifying page sets using Python imports and Telemetry discovery.

tools/perf/run_measurement

Index: tools/perf/run_measurement
diff --git a/tools/perf/run_measurement b/tools/perf/run_measurement
index 362a94343eb1d7df2926bea3aa4aa3d67ca546a5..485bf56273a7058729d505e741dd849b4a8f4967 100755
--- a/tools/perf/run_measurement
+++ b/tools/perf/run_measurement
@@ -9,7 +9,6 @@ import sys
 sys.path.append(os.path.join(os.path.dirname(__file__), os.pardir, 'telemetry'))
 
 from telemetry import test_runner
-from telemetry.core import environment
 from telemetry.core import util
 from telemetry.util import bootstrap
 
@@ -23,9 +22,14 @@ def main():
     print bootstrap.ListAllDepsPaths(CROS_BOOSTRAP_DEPS_PATH)
     return 0
 
-  base_dir = os.path.dirname(os.path.realpath(__file__))
-  test_runner.config = environment.Environment([base_dir])
-  sys.exit(test_runner.main())
+  top_level_dir = os.path.dirname(os.path.realpath(__file__))
+  environment = test_runner.Environment(
+    top_level_dir=top_level_dir,
+    test_dirs=[os.path.join(top_level_dir, 'benchmarks')],
+    page_test_dirs=[os.path.join(top_level_dir, 'measurements')],
+    page_set_dirs=[os.path.join(top_level_dir, 'page_sets')]
+  )
+  return test_runner.main(environment)
 
 
 if __name__ == '__main__':