Remove som GYP annotations, remove unused manifest.

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 334 matching lines @@
     "//ui/strings",
   ]
 
   if (chromecast_branding != "public") {
     sources += [ "$root_gen_dir/chromecast/internal/cast_shell_internal.pak" ]
 
     deps += [ "//chromecast/internal:cast_shell_internal_pak" ]
   }
 }
 
-# GYP target: chromecast_locales.gyp:chromecast_locales_pak
 action("chromecast_locales_pak") {
   script = "//chromecast/tools/build/chromecast_repack_locales.py"
 
   # .pak resources in |grit_out_dir| with the same suffix are packed into a
   # single resource and placed in |locales_dir|. The original .pak resources
   # are generated by this target's dependencies.
   grit_out_dir = "$root_gen_dir/chromecast_strings"
   locales_dir = "$root_out_dir/chromecast_locales"
 
   sources = []
@@ skipping 38 matching lines @@
   }
   args += locales
 }
 
 buildflag_header("chromecast_features") {
   header = "chromecast_features.h"
   flags = [ "IS_CAST_AUDIO_ONLY=$is_cast_audio_only" ]
 }
 
 if (is_android) {
-  # GYP target: chromecast.gyp:cast_shell_icudata
   android_assets("cast_shell_apk_assets") {
     assert(v8_use_external_startup_data)
 
     sources = [
       "$root_out_dir/assets/cast_shell.pak",
     ]
 
     deps = [
       ":cast_shell_pak",
       "//third_party/icu:icu_assets",
       "//v8:v8_external_startup_data_assets",
     ]
     disable_compression = true
   }
 
-  # GYP target: chromecast.gyp:cast_shell_apk
   android_apk("cast_shell_apk") {
     apk_name = "CastShell"
     android_manifest = "$root_gen_dir/cast_shell_manifest/AndroidManifest.xml"
     android_manifest_dep = "//chromecast/browser/android:cast_shell_manifest"
     deps = [
       ":cast_shell_apk_assets",
       "//chromecast/android:libcast_shell_android",
       "//chromecast/browser/android:cast_shell_java",
     ]
   }
 }