Run style checks also when uploading.

PRESUBMIT.py

Index: PRESUBMIT.py
diff --git a/PRESUBMIT.py b/PRESUBMIT.py
index 0077be941a00f77d92f1571c12c899e441d3e22b..7d6620384581651d703a2be36038b001c61a9a6d 100644
--- a/PRESUBMIT.py
+++ b/PRESUBMIT.py
@@ -53,6 +53,7 @@ def _CommonChecks(input_api, output_api):
   results = []
   results.extend(input_api.canned_checks.CheckOwners(
       input_api, output_api, source_file_filter=None))
+  results.extend(_V8PresubmitChecks(input_api, output_api))
   return results
 
 
@@ -67,5 +68,4 @@ def CheckChangeOnCommit(input_api, output_api):
   results.extend(_CommonChecks(input_api, output_api))
   results.extend(input_api.canned_checks.CheckChangeHasDescription(
       input_api, output_api))
-  results.extend(_V8PresubmitChecks(input_api, output_api))
   return results