Reverting due to Android builders breakage. Subsequent fixes did not fix.

chrome/android/java/src/org/chromium/chrome/browser/sync/ChromiumSyncAdapter.java

 // Copyright 2013 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;
 
 import android.accounts.Account;
 import android.app.Application;
 import android.content.AbstractThreadedSyncAdapter;
 import android.content.ContentProviderClient;
 import android.content.ContentResolver;
 import android.content.Context;
 import android.content.SyncResult;
 import android.os.Bundle;
 import android.os.Handler;
 import android.util.Log;
 
 import com.google.protos.ipc.invalidation.Types;
 
 import org.chromium.base.ThreadUtils;
 import org.chromium.base.VisibleForTesting;
-import org.chromium.base.annotations.SuppressFBWarnings;
 import org.chromium.base.library_loader.ProcessInitException;
 import org.chromium.chrome.browser.invalidation.InvalidationServiceFactory;
 import org.chromium.chrome.browser.profiles.Profile;
 import org.chromium.content.app.ContentApplication;
 import org.chromium.content.browser.BrowserStartupController;
 import org.chromium.sync.signin.ChromeSigninController;
 
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.TimeUnit;
 
@@ skipping 63 matching lines @@
             syncResult.stats.numIoExceptions++;
         }
     }
 
     private void startBrowserProcess(
             final BrowserStartupController.StartupCallback callback,
             final SyncResult syncResult, Semaphore semaphore) {
         try {
             ThreadUtils.runOnUiThreadBlocking(new Runnable() {
                 @Override
-                @SuppressFBWarnings("DM_EXIT")
                 public void run() {
                     ContentApplication.initCommandLine(getContext());
                     if (mAsyncStartup) {
                         try {
                             BrowserStartupController.get(mApplication)
                                     .startBrowserProcessesAsync(callback);
                         } catch (ProcessInitException e) {
                             Log.e(TAG, "Unable to load native library.", e);
                             System.exit(-1);
                         }
                     } else {
                         startBrowserProcessesSync(callback);
                     }
                 }
             });
         } catch (RuntimeException e) {
             // It is still unknown why we ever experience this. See http://crbug.com/180044.
             Log.w(TAG, "Got exception when trying to request a sync. Informing Android system.", e);
             // Using numIoExceptions so Android will treat this as a soft error.
             syncResult.stats.numIoExceptions++;
             semaphore.release();
         }
     }
 
-    @SuppressFBWarnings("DM_EXIT")
     private void startBrowserProcessesSync(
             final BrowserStartupController.StartupCallback callback) {
         try {
             BrowserStartupController.get(mApplication).startBrowserProcessesSync(false);
         } catch (ProcessInitException e) {
             Log.e(TAG, "Unable to load native library.", e);
             System.exit(-1);
         }
         new Handler().post(new Runnable() {
             @Override
@@ skipping 49 matching lines @@
         InvalidationServiceFactory.getForProfile(Profile.getLastUsedProfile())
                 .requestSyncFromNativeChrome(objectSource, objectId, version, payload);
     }
 
     @VisibleForTesting
     public void requestSyncForAllTypes() {
         InvalidationServiceFactory.getForProfile(Profile.getLastUsedProfile())
                 .requestSyncFromNativeChromeForAllTypes();
     }
 }