Update to latest trace-viewer DO NOT MERGE

Change-Id: I01925a5ad0ed33785a1b388f3b82ace7ddbaf25f
diff --git a/trace-viewer/PRESUBMIT.py b/trace-viewer/PRESUBMIT.py
index a40b08d..f7df077 100644
--- a/trace-viewer/PRESUBMIT.py
+++ b/trace-viewer/PRESUBMIT.py
@@ -10,15 +10,12 @@
   try:
     sys.path += [input_api.PresubmitLocalPath()]
     from hooks import pre_commit
-    results = pre_commit.GetResults('@{u}')
-    return map(output_api.PresubmitError, results)
+    return pre_commit.RunChecks(input_api, output_api)
   finally:
     sys.path = original_sys_path
 
-
 def CheckChangeOnUpload(input_api, output_api):
   return CheckChange(input_api, output_api)
 
-
 def CheckChangeOnCommit(input_api, output_api):
   return CheckChange(input_api, output_api)