cc: Use the Lint function from depot_tools' presubmit_canned_checks API.

cc/PRESUBMIT.py

Index: cc/PRESUBMIT.py
diff --git a/cc/PRESUBMIT.py b/cc/PRESUBMIT.py
index dc826b1218cc0b5f53dd66d8469cb9b918e1dd50..ad34d7ceb125d4f02ca5348f5ffb5dd9ba7abb49 100644
--- a/cc/PRESUBMIT.py
+++ b/cc/PRESUBMIT.py
@@ -17,18 +17,9 @@ def CheckChangeLintsClean(input_api, output_api):
   input_api.cpplint._cpplint_state.ResetErrorCounts()  # reset global state
   source_filter = lambda x: input_api.FilterSourceFile(
     x, white_list=CC_SOURCE_FILES, black_list=None)
-  files = [f.AbsoluteLocalPath() for f in

[tfarina, 2015/02/24 01:50:23]

This code is basically repeating what CheckChangeLintsClean do in
https://chromium.googlesource.com/chromium/tools/depot_tools/+/master/presubm...

But with level 1 rather than 5 or 4.

-           input_api.AffectedSourceFiles(source_filter)]
-  level = 1  # strict, but just warn
 
-  for file_name in files:
-    input_api.cpplint.ProcessFile(file_name, level)
-
-  if not input_api.cpplint._cpplint_state.error_count:
-    return []
-
-  return [output_api.PresubmitPromptWarning(
-    'Changelist failed cpplint.py check.')]
+  return input_api.canned_checks.CheckChangeLintsClean(

[tfarina, 2015/02/24 01:50:24]

Is this OK?

+      input_api, output_api, source_filter, [])
 
 def CheckAsserts(input_api, output_api, white_list=CC_SOURCE_FILES, black_list=None):
   black_list = tuple(black_list or input_api.DEFAULT_BLACK_LIST)