Create ChromeActivityTestRule for converting JUnit4 tests

chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java

Index: chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java
diff --git a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java
index 73296853f233893560b7bbc985e10979bfe26429..b7402e37b0ebdc5d325aac51945f05ccc1af6c2d 100644
--- a/chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java
+++ b/chrome/test/android/javatests/src/org/chromium/chrome/test/util/ApplicationTestUtils.java
@@ -39,8 +39,7 @@ public class ApplicationTestUtils {
 
     // TODO(jbudorick): fix deprecation warning crbug.com/537347
     @SuppressWarnings("deprecation")
-    public static void setUp(Context context, boolean clearAppData)
-            throws Exception {
+    public static void setUp(Context context, boolean clearAppData) {
         if (clearAppData) {
             // Clear data and remove any tasks listed in Android's Overview menu between test runs.
             clearAppData(context);
@@ -158,7 +157,7 @@ public class ApplicationTestUtils {
 
     /** Finishes all tasks Chrome has listed in Android's Overview. */
     @TargetApi(Build.VERSION_CODES.LOLLIPOP)
-    public static void finishAllChromeTasks(final Context context) throws Exception {
+    public static void finishAllChromeTasks(final Context context) {
         ThreadUtils.runOnUiThreadBlocking(new Runnable() {
             @Override
             public void run() {