🔍 Introduce default search engine dialog

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 d73eca445f83090e79e0ed682b2c6f695dca7395..69e8164c87b72223048076c50a3ad15d2ebd1a40 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
@@ -19,6 +19,7 @@ import org.chromium.chrome.browser.WebContentsFactory;
 import org.chromium.chrome.browser.WindowDelegate;
 import org.chromium.chrome.browser.customtabs.CustomTabsConnection;
 import org.chromium.chrome.browser.init.AsyncInitializationActivity;
+import org.chromium.chrome.browser.locale.LocaleManager;
 import org.chromium.chrome.browser.omnibox.AutocompleteController;
 import org.chromium.chrome.browser.snackbar.SnackbarManager;
 import org.chromium.chrome.browser.snackbar.SnackbarManager.SnackbarManageable;
@@ -37,6 +38,16 @@ public class SearchActivity extends AsyncInitializationActivity
     /** Setting this field causes the Activity to finish itself immediately for tests. */
     private static boolean sIsDisabledForTest;
 
+    /** Run when the SearchActivity knows what info it needs to display to the user. */
+    private final Runnable mSearchEngineAvailableRunnable = new Runnable() {
+        @Override
+        public void run() {
+            AutocompleteController.nativePrefetchZeroSuggestResults();
+            CustomTabsConnection.getInstance(getApplication()).warmup(0);
+            mSearchBox.onDeferredStartup(isVoiceSearchIntent());
+        }
+    };
+
     /** Main content view. */
     private ViewGroup mContentView;
 
@@ -89,6 +100,10 @@ public class SearchActivity extends AsyncInitializationActivity
         setContentView(mContentView);
 
         // Kick off everything needed for the user to type into the box.
+        // TODO(dfalcantara): We should prevent the user from doing anything while we're running the
+        //                    logic to determine if they need to see a search engine promo.  Given
+        //                    that the logic requires native to be loaded, we'll have to make some
+        //                    easy Java-only first-pass checks.
         beginQuery();
         mSearchBox.showCachedZeroSuggestResultsIfAvailable();
 
@@ -130,9 +145,11 @@ public class SearchActivity extends AsyncInitializationActivity
     public void onDeferredStartup() {
         super.onDeferredStartup();
 
-        AutocompleteController.nativePrefetchZeroSuggestResults();
-        CustomTabsConnection.getInstance(getApplication()).warmup(0);
-        mSearchBox.onDeferredStartup(isVoiceSearchIntent());
+        // Force the user to choose a search engine if they have to.
+        if (!LocaleManager.getInstance().showSearchEnginePromoIfNeeded(
+                    this, mSearchEngineAvailableRunnable)) {
+            mSearchEngineAvailableRunnable.run();
+        }
     }
 
     @Override