Add "--test-type=gpu" to suppress API Keys InfoBar

content/test/gpu/gpu_tests/pixel.py

 # Copyright (c) 2012 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.
 from datetime import datetime
 import glob
 import json
 import optparse
 import os
 import re
 
@@ skipping 33 matching lines @@
 """
 
 class PixelTestFailure(Exception):
   pass
 
 def _DidTestSucceed(tab):
   return tab.EvaluateJavaScript('domAutomationController._succeeded')
 
 class PixelValidator(cloud_storage_test_base.ValidatorBase):
   def CustomizeBrowserOptions(self, options):
-    options.AppendExtraBrowserArgs('--enable-gpu-benchmarking')
+    # --test-type=gpu is used only to suppress the "Google API Keys are missing"
+    # infobar, which causes flakiness in tests.
+    options.AppendExtraBrowserArgs(['--enable-gpu-benchmarking',
+                                    '--test-type=gpu'])
 
   def ValidateAndMeasurePage(self, page, tab, results):
     if not _DidTestSucceed(tab):
       raise page_test.Failure('Page indicated a failure')
 
     if not tab.screenshot_supported:
       raise page_test.Failure('Browser does not support screenshot capture')
 
     screenshot = tab.Screenshot(5)
 
@@ skipping 114 matching lines @@
         default=default_reference_image_dir)
 
   def CreateStorySet(self, options):
     story_set = page_sets.PixelTestsStorySet(self.GetExpectations())
     for page in story_set:
       page.script_to_evaluate_on_commit = test_harness_script
     return story_set
 
   def _CreateExpectations(self):
     return pixel_expectations.PixelExpectations()