*DRAFT* Move MediaDeviceIDSalt from chrome/ to components/ and use it in Android WebView.

chrome/browser/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
 import("//media/media_options.gni")
@@ skipping 120 matching lines @@
     "//components/flags_ui",
     "//components/gcm_driver",
     "//components/gcm_driver/instance_id",
     "//components/google/core/browser",
     "//components/guest_view/browser",
     "//components/handoff",
     "//components/history/core/browser",
     "//components/history/core/common",
     "//components/infobars/core",
     "//components/invalidation/impl",
+    "//components/media_device_id_salt",
     "//components/metrics:gpu",
     "//components/metrics:net",
     "//components/metrics:profiler",
     "//components/metrics:profiler_content",
     "//components/metrics:ui",
     "//components/metrics/proto:proto",
     "//components/metrics_services_manager",
     "//components/mime_util",
     "//components/navigation_metrics",
     "//components/network_time",
@@ skipping 1177 matching lines @@
         rebase_path(gypi_values.chrome_browser_rlz_sources, ".", "//chrome")
     deps = [
       "//components/google/core/browser",
       "//components/omnibox/browser",
       "//components/rlz",
       "//components/search_engines",
       "//rlz:rlz_lib",
     ]
   }
 }