Media Remoting: Add mojo interfaces between browser and extension.

chrome/browser/media/BUILD.gn

-# Copyright 2016 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.
-
-# TODO(miu): Decentralize build configuration: Move source files and deps
-# specific to chrome/browser/media sources from chrome/browser/BULID.gn and
-# chrome/test/BUILD.gn into this BUILD.gn file. Also, remove the root BUILD.gn
-# dependency on the cast_remoting_connector_fuzzer target after this is done.
-
-import("//testing/libfuzzer/fuzzer_test.gni")
-
-fuzzer_test("cast_remoting_connector_fuzzer") {
-  sources = [
-    "cast_remoting_connector_fuzzertest.cc",
-    "cast_remoting_connector_messaging.cc",
-    "cast_remoting_connector_messaging.h",
-  ]
-  deps = [
-    "//base",
-  ]
-  libfuzzer_options = [ "max_len = 128" ]
-  seed_corpus = "../../test/data/cast/cast_remoting_connector_fuzz_corpus"
-}