Create AwJUnit4ClassRunner AwActivityTestRule and convert AwContentsTest

base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java

Index: base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java
diff --git a/base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java b/base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java
index 080654f8bb00a9c3d1fea22f26aeae3ea3d72150..8a28d019bc6e20b212fff61963978916bd4af465 100644
--- a/base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java
+++ b/base/test/android/javatests/src/org/chromium/base/test/BaseJUnit4ClassRunner.java
@@ -4,11 +4,14 @@
 
 package org.chromium.base.test;
 
+import static org.chromium.base.test.BaseChromiumAndroidJUnitRunner.toListTests;
+
 import android.content.Context;
 import android.support.test.InstrumentationRegistry;
 import android.support.test.internal.runner.junit4.AndroidJUnit4ClassRunner;
 import android.support.test.internal.util.AndroidRunnerParams;
 
+import org.junit.runner.Description;
 import org.junit.runner.notification.RunNotifier;
 import org.junit.runners.model.FrameworkMethod;
 import org.junit.runners.model.InitializationError;
@@ -129,6 +132,21 @@ public class BaseJUnit4ClassRunner extends AndroidJUnit4ClassRunner {
         return super.isIgnored(method) || shouldSkip(method);
     }
 
+    /**
+     * Run test with or without execution based on bundle arguments.
+     */
+    @Override
+    public void run(RunNotifier notifier) {
+        if (toListTests(InstrumentationRegistry.getArguments())) {
+            for (Description child : getDescription().getChildren()) {
+                notifier.fireTestStarted(child);
+                notifier.fireTestFinished(child);
+            }
+        } else {
+            super.run(notifier);
+        }
+    }
+
     @Override
     protected void runChild(FrameworkMethod method, RunNotifier notifier) {
         runPreTestHooks(method);
@@ -165,4 +183,5 @@ public class BaseJUnit4ClassRunner extends AndroidJUnit4ClassRunner {
     protected Statement withAfters(FrameworkMethod method, Object test, Statement base) {
         return super.withAfters(method, test, new ScreenshotOnFailureStatement(base));
     }
+
 }