🔍 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 5f8337062965f173c0b715262c9b86048f0d86e0..e58a9a83e1d1c7a5a29069a76da49c07b7029e36 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
@@ -12,6 +12,7 @@ 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;
@@ -33,6 +34,9 @@ import org.chromium.ui.base.ActivityWindowAndroid;
 /** Queries the user's default search engine and shows autocomplete suggestions. */
 public class SearchActivity extends AsyncInitializationActivity
         implements SnackbarManageable, SearchActivityLocationBarLayout.Delegate {
+    /** Setting this field causes the Activity to finish itself immediately for tests. */
+    private static boolean sIsDisabledForTest;
+
     /** Main content view. */
     private ViewGroup mContentView;
 
@@ -50,6 +54,12 @@ 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();
     }
@@ -205,4 +215,10 @@ public class SearchActivity extends AsyncInitializationActivity
         finish();
         overridePendingTransition(0, R.anim.activity_close_exit);
     }
+
+    /** See {@link #sIsDisabledForTest}. */
+    @VisibleForTesting
+    static void disableForTests() {
+        sIsDisabledForTest = true;
+    }
 }