Revert of Convert ChromeActivityTestCaseBase direct children to JUnit4

chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java
index 51d03315e315427d9000eaf2274e68e418de7d60..25c42d188682983ac28e3425821d3b8bd2e622c3 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/CrashTest.java
@@ -6,35 +6,31 @@
 
 import android.support.test.filters.SmallTest;
 
-import org.junit.Rule;
-import org.junit.Test;
-import org.junit.runner.RunWith;
-
-import org.chromium.base.test.util.CommandLineFlags;
 import org.chromium.base.test.util.DisabledTest;
-import org.chromium.chrome.test.ChromeActivityTestRule;
-import org.chromium.chrome.test.ChromeJUnit4ClassRunner;
+import org.chromium.chrome.test.ChromeActivityTestCaseBase;
 
 /**
  * The class contains a testcase that intentionally crashes.
  */
-@RunWith(ChromeJUnit4ClassRunner.class)
-@CommandLineFlags.Add({ChromeSwitches.DISABLE_FIRST_RUN_EXPERIENCE,
-        ChromeActivityTestRule.DISABLE_NETWORK_PREDICTION_FLAG})
-public class CrashTest {
-    @Rule
-    public ChromeActivityTestRule<ChromeActivity> mActivityTestRule =
-            new ChromeActivityTestRule<>(ChromeActivity.class);
+public class CrashTest extends ChromeActivityTestCaseBase<ChromeActivity> {
+
+    public CrashTest() {
+        super(ChromeActivity.class);
+    }
+
+    @Override
+    public void startMainActivity() {
+        // Don't launch activity automatically.
+    }
 
     /**
      * Intentionally crashing the test. The testcase should be
      * disabled the majority of time.
      */
-    @Test
     @DisabledTest
     @SmallTest
     public void testIntentionalBrowserCrash() throws Exception {
-        mActivityTestRule.startMainActivityFromLauncher();
-        mActivityTestRule.loadUrl("chrome://inducebrowsercrashforrealz");
+        startMainActivityFromLauncher();
+        loadUrl("chrome://inducebrowsercrashforrealz");
     }
 }