Create AwJUnit4ClassRunner AwActivityTestRule and convert AwContentsTest

android_webview/test/shell/src/org/chromium/android_webview/test/AwJUnit4ClassRunner.java

Index: android_webview/test/shell/src/org/chromium/android_webview/test/AwJUnit4ClassRunner.java
diff --git a/android_webview/test/shell/src/org/chromium/android_webview/test/AwJUnit4ClassRunner.java b/android_webview/test/shell/src/org/chromium/android_webview/test/AwJUnit4ClassRunner.java
new file mode 100644
index 0000000000000000000000000000000000000000..0034d4172dd084d7591522223fbb9de67057268e
--- /dev/null
+++ b/android_webview/test/shell/src/org/chromium/android_webview/test/AwJUnit4ClassRunner.java
@@ -0,0 +1,101 @@
+// Copyright 2017 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.
+
+package org.chromium.android_webview.test;
+
+import android.support.test.InstrumentationRegistry;
+
+import org.junit.runner.notification.RunNotifier;
+import org.junit.runners.model.FrameworkMethod;
+import org.junit.runners.model.InitializationError;
+
+import org.chromium.android_webview.AwSwitches;
+import org.chromium.base.CollectionUtil;
+import org.chromium.base.CommandLine;
+import org.chromium.base.Log;
+import org.chromium.base.test.BaseJUnit4ClassRunner;
+import org.chromium.base.test.BaseTestResult.PreTestHook;
+import org.chromium.base.test.util.CommandLineFlags;
+import org.chromium.base.test.util.parameter.SkipCommandLineParameterization;
+import org.chromium.policy.test.annotations.Policies;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * A custom runner for //chrome JUnit4 tests.
+ */
+public final class AwJUnit4ClassRunner extends BaseJUnit4ClassRunner {
+    /**
+     * Create an AwJUnit4ClassRunner to run {@code klass} and initialize values
+     *
+     * @param klass Test class to run
+     * @throws InitializationError if the test class is malformed
+     */
+    public AwJUnit4ClassRunner(Class<?> klass) throws InitializationError {
+        super(klass, null, defaultPreTestHooks());
+    }
+
+    private static List<PreTestHook> defaultPreTestHooks() {
+        return CollectionUtil.newArrayList(Policies.getRegistrationHook());
+    }
+
+    @Override
+    protected List<FrameworkMethod> getChildren() {
+        List<FrameworkMethod> result = new ArrayList<>();
+        Log.w("#YOLAND-SIZE",

[boliu, 2017/07/27 17:32:18]

no random logs, and below

+                Integer.toString(computeTestMethods().size()) + " tests in total first");
+        for (FrameworkMethod method : computeTestMethods()) {
+            if (method.getAnnotation(SkipCommandLineParameterization.class) == null) {
+                result.add(new WebViewMultiProcessFrameworkMethod(method));
+            }
+            result.add(method);
+        }
+        Log.w("#YOLAND-SIZE", Integer.toString(result.size()) + " tests in total");
+        return result;
+    }
+
+    @Override
+    protected void runChild(FrameworkMethod method, RunNotifier notifier) {
+        CommandLineFlags.setUp(InstrumentationRegistry.getTargetContext(), method.getMethod());
+        if (method instanceof WebViewMultiProcessFrameworkMethod) {
+            CommandLine.getInstance().appendSwitch(AwSwitches.WEBVIEW_SANDBOXED_RENDERER);
+        }
+        super.runChild(method, notifier);
+    }
+
+    /**
+     * Custom FrameworkMethod class indicate this test method will run in multiprocess mode.
+     *
+     * The clas also add "__multiprocess_mode" postfix to the test name.
+     */
+    private static class WebViewMultiProcessFrameworkMethod extends FrameworkMethod {
+        public WebViewMultiProcessFrameworkMethod(FrameworkMethod method) {
+            super(method.getMethod());
+        }
+
+        @Override
+        public String getName() {
+            return super.getName() + "__multiprocess_mode";
+        }
+
+        @Override
+        public boolean equals(Object obj) {
+            if (obj instanceof WebViewMultiProcessFrameworkMethod) {
+                WebViewMultiProcessFrameworkMethod method =
+                        (WebViewMultiProcessFrameworkMethod) obj;
+                return super.equals(obj) && method.getName().equals(getName());
+            }
+            return false;
+        }
+
+        @Override
+        public int hashCode() {
+            int result = 17;
+            result = 31 * result + super.hashCode();
+            result = 31 * result + getName().hashCode();
+            return result;
+        }
+    }
+}