Break apart the TabModelBase's JNI calls into its own class

chrome/chrome_browser.gypi

 # Copyright 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.
 
 {
   'variables': {
     # All .cc, .h, .m, and .mm files under browser except for:
     # * tests and mocks.
     # * code below browser/chromeos
     # * code below browser/extensions
@@ skipping 2735 matching lines @@
       'android/java/src/org/chromium/chrome/browser/prerender/ExternalPrerenderHandler.java',
       'android/java/src/org/chromium/chrome/browser/RecentlyClosedBridge.java',
       'android/java/src/org/chromium/chrome/browser/ShortcutHelper.java',
       'android/java/src/org/chromium/chrome/browser/SSLClientCertificateRequest.java',
       'android/java/src/org/chromium/chrome/browser/search_engines/TemplateUrlService.java',
       'android/java/src/org/chromium/chrome/browser/signin/AccountManagementScreenHelper.java',
       'android/java/src/org/chromium/chrome/browser/signin/OAuth2TokenService.java',
       'android/java/src/org/chromium/chrome/browser/signin/SigninManager.java',
       'android/java/src/org/chromium/chrome/browser/sync/ProfileSyncService.java',
       'android/java/src/org/chromium/chrome/browser/tabmodel/TabModelBase.java',
+      'android/java/src/org/chromium/chrome/browser/tabmodel/TabModelJniBridge.java',
       'android/java/src/org/chromium/chrome/browser/Tab.java',
       'android/java/src/org/chromium/chrome/browser/TtsPlatformImpl.java',
       'android/java/src/org/chromium/chrome/browser/UmaBridge.java',
       'android/java/src/org/chromium/chrome/browser/UmaUtils.java',
       'android/java/src/org/chromium/chrome/browser/UrlUtilities.java',
       'android/java/src/org/chromium/chrome/browser/VoiceSearchTabHelper.java',
       'android/java/src/org/chromium/chrome/browser/WebsiteSettingsPopup.java',
       'android/java/src/org/chromium/chrome/browser/WebsiteSettingsPopupLegacy.java',
       'android/java/src/org/chromium/chrome/browser/infobar/AutoLoginDelegate.java',
       'android/java/src/org/chromium/chrome/browser/infobar/ConfirmInfoBarDelegate.java',
@@ skipping 835 matching lines @@
           'variables': {
             'proto_in_dir': 'browser/sync_file_system/drive_backend',
             'proto_out_dir': 'chrome/browser/sync_file_system/drive_backend',
           },
           'includes': [ '../build/protoc.gypi' ]
         },
       ],
     },],
   ],
 }