Define a new media_cast component for iOS cast builds

media/cast/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.
 
 component("cast") {
   deps = [
     ":sender",
     ":receiver",
   ]
 }
@@ skipping 120 matching lines @@
   ]
 
   deps = [
     ":common",
     ":net",
     "//media",
     "//media:shared_memory_support",
     "//third_party/libvpx",
     "//third_party/opus",
   ]
+
+  # use a restricted subset of media and no software codecs on iOS
+  if (is_ios) {
+    deps += [ "//media:media_for_cast_ios" ]
+    deps -= [
+      "//media",
+      "//third_party/libvpx",
+      "//third_party/opus",
+    ]
+    sources -= [
+      "sender/external_video_encoder.h",
+      "sender/external_video_encoder.cc",
+      "sender/video_encoder_impl.h",
+      "sender/video_encoder_impl.cc",
+      "sender/vp8_encoder.cc",
+      "sender/vp8_encoder.h",
+    ]
+  }
 }
 
 source_set("receiver") {
   sources = [
     "cast_receiver.h",
     "receiver/audio_decoder.cc",
     "receiver/audio_decoder.h",
     "receiver/cast_receiver_impl.cc",
     "receiver/cast_receiver_impl.h",
     "receiver/frame_receiver.cc",
     "receiver/frame_receiver.h",
     "receiver/video_decoder.cc",
     "receiver/video_decoder.h",
   ]
 
   deps = [
     ":common",
     ":net",
     "//media",
     "//media:shared_memory_support",
+    "//third_party/libvpx",
     "//third_party/opus",
-    "//third_party/libvpx",
     "//ui/gfx",
   ]
+
+  # use a restricted subset of media and no software codecs on iOS
+  if (is_ios) {
+    deps += [ "//media:media_for_cast_ios" ]
+    deps -= [
+      "//media",
+      "//third_party/libvpx",
+      "//third_party/opus",
+    ]
+  }
 }
 
 source_set("test_support") {
   testonly = true
   sources = [
 # TODO(hclam): FFmpeg.
 #    "test/fake_media_source.cc",
 #    "test/fake_media_source.h",
     "test/fake_single_thread_task_runner.cc",
     "test/fake_single_thread_task_runner.h",
@@ skipping 132 matching lines @@
   sources = [
     "test/utility/udp_proxy_main.cc",
   ]
 
   deps = [
     ":test_support",
     "//base",
     "//net",
   ]
 }