Make all auth requests notification-driven.

Previously, when having authentication issues on Android (for example, if the
user changed their password), Chrome would pop-up a dialog asking the user
to sign in again. This was bad, because part of the auth flow has a link to a
website where you can do account recovery, but that would just kick you back
into the auth pop-up in an infinite loop. Also it was intrusive to the user and
against Android best practices.

Additionally, on dev builds of Chromium, it could result in an annoying
stream of permission request pop-ups dominating the screen.

Now, in both cases, the auth request is handled by generating a notification
that the user must activate before losing control of the screen.

BUG=302608

Review URL: https://codereview.chromium.org/627543002

Cr-Commit-Position: refs/heads/master@{#298911}

1 files changed, 5 insertions, 13 deletions

diff --git a/sync/android/java/src/org/chromium/sync/signin/AccountManagerHelper.java b/sync/android/java/src/org/chromium/sync/signin/AccountManagerHelper.java
index be76287..03df234 100644
--- a/sync/android/java/src/org/chromium/sync/signin/AccountManagerHelper.java
+++ b/sync/android/java/src/org/chromium/sync/signin/AccountManagerHelper.java
@@ -13,7 +13,6 @@ import android.accounts.AuthenticatorException;
 import android.accounts.OperationCanceledException;
 import android.app.Activity;
 import android.content.Context;
-import android.content.Intent;
 import android.os.AsyncTask;
 import android.os.Bundle;
 import android.util.Log;
@@ -51,6 +50,9 @@ public class AccountManagerHelper {
 
     private Context mApplicationContext;
 
+    /**
+     * A simple callback for getAuthToken.
+     */
     public interface GetAuthTokenCallback {
         /**
          * Invoked on the UI thread once a token has been provided by the AccountManager.
@@ -162,7 +164,7 @@ public class AccountManagerHelper {
     @Deprecated
     public String getAuthTokenFromBackground(Account account, String authTokenType) {
         AccountManagerFuture<Bundle> future = mAccountManager.getAuthToken(account,
-                authTokenType, false, null, null);
+                authTokenType, true, null, null);
         AtomicBoolean errorEncountered = new AtomicBoolean(false);
         return getAuthTokenInner(future, errorEncountered);
     }
@@ -219,16 +221,6 @@ public class AccountManagerHelper {
         try {
             Bundle result = future.getResult();
             if (result != null) {
-                if (result.containsKey(AccountManager.KEY_INTENT)) {
-                    Log.d(TAG, "Starting intent to get auth credentials");
-                    // Need to start intent to get credentials
-                    Intent intent = result.getParcelable(AccountManager.KEY_INTENT);
-                    int flags = intent.getFlags();
-                    flags |= Intent.FLAG_ACTIVITY_NEW_TASK;
-                    intent.setFlags(flags);
-                    mApplicationContext.startActivity(intent);
-                    return null;
-                }
                 return result.getString(AccountManager.KEY_AUTHTOKEN);
             } else {
                 Log.w(TAG, "Auth token - getAuthToken returned null");
@@ -254,7 +246,7 @@ public class AccountManagerHelper {
                     account, authTokenType, null, activity, null, null);
         } else {
             future = mAccountManager.getAuthToken(
-                    account, authTokenType, false, null, null);
+                    account, authTokenType, true, null, null);
         }
         final AccountManagerFuture<Bundle> finalFuture = future;
         errorEncountered.set(false);