🔍 Add basic search widget test

chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java

Index: chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java b/chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java
index 84d23c9ba249f0c0fe37d73ddba466164c45ef63..3189f7cef1d6561cfdb633b60ca3e7606ca7abf7 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/searchwidget/SearchActivity.java
@@ -13,6 +13,7 @@ import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
 
+import org.chromium.base.VisibleForTesting;
 import org.chromium.chrome.R;
 import org.chromium.chrome.browser.IntentHandler;
 import org.chromium.chrome.browser.WebContentsFactory;
@@ -36,6 +37,8 @@ import org.chromium.ui.base.ActivityWindowAndroid;
 public class SearchActivity extends AsyncInitializationActivity
         implements SnackbarManageable, SearchActivityLocationBarLayout.Delegate,
                    View.OnLayoutChangeListener {
+    /** Setting this field causes the Activity to finish itself immediately for tests. */
+    private static boolean sIsDisabledForTest;
 
     /** Main content view. */
     private ViewGroup mContentView;
@@ -54,6 +57,12 @@ public class SearchActivity extends AsyncInitializationActivity
     private Tab mTab;
 
     @Override
+    protected boolean isStartedUpCorrectly(Intent intent) {
+        if (sIsDisabledForTest) return false;
+        return true;
+    }
+
+    @Override
     public void backKeyPressed() {
         cancelSearch();
     }
@@ -219,4 +228,10 @@ public class SearchActivity extends AsyncInitializationActivity
         finish();
         overridePendingTransition(0, R.anim.activity_close_exit);
     }
+
+    /** See {@link #sIsDisabledForTest}. */
+    @VisibleForTesting
+    static void disableForTests() {
+        sIsDisabledForTest = true;
+    }
 }