Remove third_party/libjingle and update GN targets.

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("//build/split_static_library.gni")
 import("//chrome/common/features.gni")
@@ skipping 1559 matching lines @@
     "//sql",
     "//storage/browser",
     "//storage/common",
     "//third_party/WebKit/public:features",
     "//third_party/WebKit/public:image_resources",
     "//third_party/WebKit/public:resources",
     "//third_party/cacheinvalidation",
     "//third_party/icu",
     "//third_party/leveldatabase",
     "//third_party/libaddressinput",
-    "//third_party/libjingle",
     "//third_party/libxml",
     "//third_party/libyuv",
     "//third_party/re2",
     "//third_party/smhasher:cityhash",
     "//third_party/webrtc/modules/desktop_capture",
+    "//third_party/webrtc_overrides",
     "//third_party/widevine/cdm:headers",
     "//third_party/zlib",
     "//third_party/zlib:compression_utils",
     "//third_party/zlib:minizip",
     "//third_party/zlib:zip",
     "//ui/base",
     "//ui/base:ui_data_pack",
     "//ui/base/ime",
     "//ui/events:events_base",
     "//ui/gfx",
@@ skipping 2946 matching lines @@
       "media/pepper_cdm_test_constants.cc",
       "media/pepper_cdm_test_constants.h",
     ]
   }
 }
 
 service_manifest("preferences_manifest") {
   name = "preferences"
   source = "prefs/preferences_manifest.json"
 }