Make device serial required in AdbWrapper/DeviceUtils

build/android/pylib/instrumentation/test_runner_test.py

Index: build/android/pylib/instrumentation/test_runner_test.py
diff --git a/build/android/pylib/instrumentation/test_runner_test.py b/build/android/pylib/instrumentation/test_runner_test.py
index 0f2845ea5bfab4f1ac9972efbc75b0c011776349..fda1e23435c937019414ad3cd1ca9b1c21be5977 100755
--- a/build/android/pylib/instrumentation/test_runner_test.py
+++ b/build/android/pylib/instrumentation/test_runner_test.py
@@ -27,7 +27,8 @@ class InstrumentationTestRunnerTest(unittest.TestCase):
     options = mock.Mock()
     options.tool = ''
     package = mock.Mock()
-    self.instance = test_runner.TestRunner(options, None, 0, package)
+    self.instance = test_runner.TestRunner(
+        options, '123456789abcdef0', 0, package)
 
   def testParseAmInstrumentRawOutput_nothing(self):
     code, result, statuses = (
@@ -226,6 +227,8 @@ class InstrumentationTestRunnerTest(unittest.TestCase):
         'test': ['testMethod'],
       }),
     ]
+    self.instance.device.old_interface.DismissCrashDialogIfNeeded = mock.Mock(
+        return_value=None)
     result = self.instance._GenerateTestResult(
         'test.package.TestClass#testMethod', statuses, 0, 1000)
     self.assertEqual(base_test_result.ResultType.FAIL, result.GetType())