First failure:
https://build.chromium.org/p/chromium.android/builders/Android%20WebView%20L%20%28dbg%29/builds/5246


Build 5253 fixed other Run CTS tests that were failing, except for
android.webkit.cts.WebSettingsTest#testAccessJavaScriptCanOpenWindowsAutomatically

See https://build.chromium.org/p/chromium.android/builders/Android%20WebView%20L%20%28dbg%29/builds/5253


Sample logs:
C  423.359s Main  [FAIL] android.webkit.cts.WebSettingsTest#testAccessJavaScriptCanOpenWindowsAutomatically:
C  423.359s Main  junit.framework.AssertionFailedError: unexpected timeout
C  423.359s Main  	at junit.framework.Assert.fail(Assert.java:50)
C  423.359s Main  	at android.cts.util.PollingCheck.run(PollingCheck.java:56)
C  423.359s Main  	at android.webkit.cts.WebSettingsTest.testAccessJavaScriptCanOpenWindowsAutomatically(WebSettingsTest.java:420)
C  423.359s Main  	at java.lang.reflect.Method.invoke(Native Method)
C  423.359s Main  	at java.lang.reflect.Method.invoke(Method.java:372)
C  423.359s Main  	at android.test.InstrumentationTestCase.runMethod(InstrumentationTestCase.java:214)
C  423.359s Main  	at android.test.InstrumentationTestCase.runTest(InstrumentationTestCase.java:199)
C  423.359s Main  	at android.test.ActivityInstrumentationTestCase2.runTest(ActivityInstrumentationTestCase2.java:192)
C  423.359s Main  	at junit.framework.TestCase.runBare(TestCase.java:134)
C  423.359s Main  	at junit.framework.TestResult$1.protect(TestResult.java:115)
C  423.359s Main  	at junit.framework.TestResult.runProtected(TestResult.java:133)
C  423.359s Main  	at android.support.test.internal.runner.junit3.DelegatingTestResult.runProtected(DelegatingTestResult.java:90)
C  423.359s Main  	at junit.framework.TestResult.run(TestResult.java:118)
C  423.359s Main  	at android.support.test.internal.runner.junit3.AndroidTestResult.run(AndroidTestResult.java:52)
C  423.359s Main  	at junit.framework.TestCase.run(TestCase.java:124)
C  423.359s Main  	at android.support.test.internal.runner.junit3.NonLeakyTestSuite$NonLeakyTest.run(NonLeakyTestSuite.java:63)
C  423.359s Main  	at junit.framework.TestSuite.runTest(TestSuite.java:243)
C  423.359s Main  	at junit.framework.TestSuite.run(TestSuite.java:238)
C  423.360s Main  	at android.support.test.internal.runner.junit3.DelegatingTestSuite.run(DelegatingTestSuite.java:103)
C  423.360s Main  	at android.support.test.internal.runner.junit3.AndroidTestSuite.run(AndroidTestSuite.java:52)
C  423.360s Main  	at android.support.test.internal.runner.junit3.JUnit38ClassRunner.run(JUnit38ClassRunner.java:90)
C  423.360s Main  	at org.junit.runners.Suite.runChild(Suite.java:128)
C  423.360s Main  	at org.junit.runners.Suite.runChild(Suite.java:24)
C  423.360s Main  	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
C  423.360s Main  	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
C  423.360s Main  	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
C  423.360s Main  	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
C  423.360s Main  	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
C  423.360s Main  	at org.junit.runners.ParentRunner.run(ParentRunner.java:300)
C  423.360s Main  	at org.junit.runner.JUnitCore.run(JUnitCore.java:157)
C  423.360s Main  	at org.junit.runner.JUnitCore.run(JUnitCore.java:136)
C  423.360s Main  	at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:245)
C  423.360s Main  	at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1853)
C  423.360s Main  ********************************************************************************
C  423.360s Main  Summary
C  423.360s Main  ********************************************************************************
C  423.360s Main  [==========] 188 tests ran.
C  423.360s Main  [  PASSED  ] 187 tests.
C  423.360s Main  [  FAILED  ] 1 test, listed below:
C  423.360s Main  [  FAILED  ] android.webkit.cts.WebSettingsTest#testAccessJavaScriptCanOpenWindowsAutomatically