🔍 Introduce default search engine dialog

chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java

Index: chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java
index 0b85cc770f3fa9478e2421502ce868c627b15015..83bca9e3bcaa84aef9246791eaa1418350987b5f 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/infobar/InfoBarControlLayout.java
@@ -7,6 +7,7 @@ package org.chromium.chrome.browser.infobar;
 import android.content.Context;
 import android.content.res.Resources;
 import android.graphics.Paint;
+import android.support.annotation.Nullable;
 import android.support.v7.widget.SwitchCompat;
 import android.text.method.LinkMovementMethod;
 import android.view.LayoutInflater;
@@ -44,11 +45,16 @@ import java.util.List;
  * TODO(dfalcantara): The line spacing multiplier is applied to all lines in JB & KK, even if the
  *                    TextView has only one line.  This throws off vertical alignment.  Find a
  *                    solution that hopefully doesn't involve subclassing the TextView.
+ *
+ * TODO(dfalcantara): Move this to a more general location.
  */
 public final class InfoBarControlLayout extends ViewGroup {
+    public static final int INVALID_INDEX = -1;
+
     /**
      * ArrayAdapter that automatically determines what size make its Views to accommodate all of
      * its potential values.
+     * @param <T> Type of object that the ArrayAdapter stores.
      */
     public static final class InfoBarArrayAdapter<T> extends ArrayAdapter<T> {
         private final String mLabel;
@@ -361,9 +367,11 @@ public final class InfoBarControlLayout extends ViewGroup {
      * -------------------------------------------------
      *
      * @param messages      Messages to display for the options.
+     * @param tags          Optional list of tags to attach to the buttons.
      * @param selectedIndex Which index to mark as being selected.
      */
-    public RadioGroup addRadioButtons(List<CharSequence> messages, int selectedIndex) {
+    public RadioGroup addRadioButtons(
+            List<CharSequence> messages, @Nullable List<?> tags, int selectedIndex) {
         ControlLayoutParams params = new ControlLayoutParams();
         params.mMustBeFullWidth = true;
 
@@ -375,6 +383,7 @@ public final class InfoBarControlLayout extends ViewGroup {
                     (RadioButton) LayoutInflater.from(getContext())
                             .inflate(R.layout.infobar_control_radio, radioLayout, false);
             button.setText(messages.get(i));
+            if (tags != null) button.setTag(tags.get(i));
             button.setChecked(i == selectedIndex);
             radioLayout.addView(button);