Add a presubmit script to check if eventSender still be used for new layout tests

third_party/WebKit/LayoutTests/PRESUBMIT.py

 # Copyright (c) 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 """LayoutTests/ presubmit script for Blink.
 
 See http://dev.chromium.org/developers/how-tos/depottools/presubmit-scripts
 for more details about the presubmit API built into gcl.
 """
 
@@ skipping 69 matching lines @@
         if any(_local_path(p) in dirty_files for p in group):
             a = group[0]
             for b in group[1:]:
                 if not filecmp.cmp(_absolute_path(a), _absolute_path(b), shallow=False):
                     errors.append(output_api.PresubmitError(
                         'Files that should match differ: (see https://crbug.com/362788)\n' +
                         '  %s <=> %s' % (_local_path(a), _local_path(b))))
     return errors
 
 
+def _CheckFilesUsingEventSender(input_api, output_api):
+    """Check if any new layout tests still use eventSender. If they do, we encourage replacing them with
+       chrome.gpuBenchmarking.pointerActionSequence.
+    """
+    results = []
+    actions = ["eventSender.touch", "eventSender.mouse", "eventSender.gesture"]
+    for f in input_api.AffectedFiles():
+        if f.Action() == 'A':
+            for line_num, line in f.ChangedContents():
+                if any(action in line for action in actions):
+                    results.append(output_api.PresubmitError(
+                        'Files that still use eventSender: %s:%d %s, please use chrome.gpuBenchmarking.pointerActionSequence instead.' %
+                        (f.LocalPath(), line_num, line)))
+    return results
+
+
 def CheckChangeOnUpload(input_api, output_api):
     results = []
     results.extend(_CheckTestharnessResults(input_api, output_api))
     results.extend(_CheckIdenticalFiles(input_api, output_api))
+    results.extend(_CheckFilesUsingEventSender(input_api, output_api))
     return results
 
 
 def CheckChangeOnCommit(input_api, output_api):
     results = []
     results.extend(_CheckTestharnessResults(input_api, output_api))
     results.extend(_CheckIdenticalFiles(input_api, output_api))
+    results.extend(_CheckFilesUsingEventSender(input_api, output_api))
     return results