Implement Android key/value backup

chrome/browser/chrome_browser_main_android.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/chrome_browser_main_android.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
@@ skipping 72 matching lines @@
 
   // Previously we stored information related to salient images for bookmarks
   // in a local file. We replaced the salient images with favicons. As part
   // of the clean up, the local file needs to be deleted. See crbug.com/499415.
   base::FilePath bookmark_image_file_path =
       profile()->GetPath().Append("BookmarkImageAndUrlStore.db");
   content::BrowserThread::PostDelayedTask(
       content::BrowserThread::FILE, FROM_HERE,
       base::Bind(&DeleteFileTask, bookmark_image_file_path),
       base::TimeDelta::FromMinutes(1));
+  // Start watching the preferences that need to be backed up backup using
+  // Android backup, so that we create a new backup if they change.
+  backup_watcher_.reset(new chrome::android::ChromeBackupWatcher(profile()));
 }
 
 void ChromeBrowserMainPartsAndroid::PreEarlyInitialization() {
   TRACE_EVENT0("startup",
     "ChromeBrowserMainPartsAndroid::PreEarlyInitialization")
   net::NetworkChangeNotifier::SetFactory(
       new net::NetworkChangeNotifierFactoryAndroid());
 
   content::Compositor::Initialize();
 
@@ skipping 24 matching lines @@
   content::BrowserThread::GetBlockingPool()->PostDelayedTask(FROM_HERE,
       base::Bind(&SeccompSupportDetector::StartDetection),
       base::TimeDelta::FromMinutes(1));
 
   RegisterChromeJavaMojoInterfaces();
 }
 
 void ChromeBrowserMainPartsAndroid::ShowMissingLocaleMessageBox() {
   NOTREACHED();
 }