Revert of Created the dialog offering the user to merge their account data or keep it

chrome/android/java/src/org/chromium/chrome/browser/sync/ui/ChooseAccountFragment.java

Index: chrome/android/java/src/org/chromium/chrome/browser/sync/ui/ChooseAccountFragment.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/sync/ui/ChooseAccountFragment.java b/chrome/android/java/src/org/chromium/chrome/browser/sync/ui/ChooseAccountFragment.java
new file mode 100644
index 0000000000000000000000000000000000000000..ade00ae9ccea4001090278418b456605e8f284ac
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/sync/ui/ChooseAccountFragment.java
@@ -0,0 +1,63 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+package org.chromium.chrome.browser.sync.ui;
+
+import android.app.Activity;
+import android.app.Dialog;
+import android.app.DialogFragment;
+import android.content.DialogInterface;
+import android.content.DialogInterface.OnClickListener;
+import android.os.Bundle;
+import android.support.v7.app.AlertDialog;
+
+import org.chromium.base.metrics.RecordUserAction;
+import org.chromium.chrome.R;
+import org.chromium.chrome.browser.signin.SigninManager;
+
+import java.util.List;
+
+/**
+ * A dialog that lets the user choose which Google account to use when signing in to Chrome.
+ */
+public class ChooseAccountFragment extends DialogFragment implements OnClickListener {
+
+    protected String[] mAccounts;
+
+    protected int mSelectedAccount;
+
+    // TODO(skym): Fragments should have empty constructors, crbug.com/580093.
+    public ChooseAccountFragment(List<String> accountNames) {
+        mAccounts = accountNames.toArray(new String[accountNames.size()]);
+    }
+
+    @Override
+    public Dialog onCreateDialog(Bundle savedInstanceState) {
+        return new AlertDialog.Builder(getActivity(), R.style.AlertDialogTheme)
+                .setSingleChoiceItems(mAccounts, mSelectedAccount, this)
+                .setPositiveButton(R.string.choose_account_sign_in, this)
+                .setNegativeButton(R.string.cancel, this)
+                .setTitle(R.string.sign_in_google_account)
+                .create();
+    }
+
+    private static void signIn(final Activity activity, String accountName) {
+        RecordUserAction.record("Signin_Signin_FromSettings");
+        SigninManager.get(activity).signIn(accountName, activity, null);
+    }
+
+    @Override
+    public void onClick(DialogInterface dialog, int which) {
+        switch (which) {
+            case AlertDialog.BUTTON_POSITIVE: {
+                signIn(getActivity(), mAccounts[mSelectedAccount]);
+                break;
+            }
+            default: {
+                mSelectedAccount = which;
+                break;
+            }
+        }
+    }
+}