[chromecast] Removes pepper plugin support.

chromecast/BUILD.gn

 # Copyright 2015 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/buildflag_header.gni")
 import("//build/config/features.gni")
 import("//build/config/locales.gni")
 import("//build/config/sanitizers/sanitizers.gni")
 import("//build/config/ui.gni")
 import("//chromecast/build/tests/cast_test.gni")
@@ skipping 21 matching lines @@
     "//base:base_unittests",
     "//chromecast/base:cast_base_unittests",
     "//chromecast/base/component:cast_component_unittests",
     "//chromecast/crypto:cast_crypto_unittests",
     "//chromecast/system/reboot:cast_reboot_unittests",
     "//content/test:content_unittests",
     "//crypto:crypto_unittests",
     "//media:media_unittests",
     "//media/midi:midi_unittests",
     "//net:net_unittests",
-    "//ppapi:ppapi_unittests",
     "//sandbox/linux:sandbox_linux_unittests",
     "//sql:sql_unittests",
     "//storage/browser:storage_unittests",
     "//third_party/cacheinvalidation:cacheinvalidation_unittests",
     "//ui/base:ui_base_unittests",
   ]
 
   if (!is_cast_audio_only) {
     tests += [ "//gpu:gpu_unittests" ]
   }
@@ skipping 403 matching lines @@
     shared_libraries = [ "//chromecast/android:libcast_shell_android" ]
 
     deps = [
       ":cast_shell_apk_assets",
       "//base:base_java",
       "//chromecast/android:libcast_shell_android",
       "//chromecast/browser/android:cast_shell_java",
     ]
   }
 }