[test] Don't run presubmit over deleted files.

BUG=v8:5603
NOTRY=true

Review-Url: https://codereview.chromium.org/2534813002
Cr-Commit-Position: refs/heads/master@{#41297}

PRESUBMIT.py

@@ -71,9 +71,11 @@ def _V8PresubmitChecks(input_api, output_api):
   from presubmit import CheckStatusFiles
 
   results = []
-  if not CppLintProcessor().RunOnFiles(input_api.AffectedFiles()):
+  if not CppLintProcessor().RunOnFiles(
+      input_api.AffectedFiles(include_deletes=False)):
     results.append(output_api.PresubmitError("C++ lint check failed"))
-  if not SourceProcessor().RunOnFiles(input_api.AffectedFiles()):
+  if not SourceProcessor().RunOnFiles(
+      input_api.AffectedFiles(include_deletes=False)):
     results.append(output_api.PresubmitError(
         "Copyright header, trailing whitespaces and two empty lines " \
         "between declarations check failed"))

tools/presubmit.py

@@ -179,8 +179,7 @@ class SourceFileProcessor(object):
     all_files = [
       f.AbsoluteLocalPath()
       for f in files
-      if (os.path.isfile(f.AbsoluteLocalPath()) and
-          not self.IgnoreFile(f.LocalPath()) and
+      if (not self.IgnoreFile(f.LocalPath()) and
           self.IsRelevant(f.LocalPath()) and
           all(not self.IgnoreDir(d) for d in dirs(f.LocalPath())) and
           any(map(f.LocalPath().startswith, search_paths)))