Fix component build error in GN build.

media/blink/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("blink") {
   output_name = "media_blink"
 
   deps = [
     "//base",
     "//cc",
     "//cc/blink",
     "//media",
+    "//media:shared_memory_support",
     "//net",
     "//third_party/WebKit/public:blink",
     "//ui/gfx",
     "//ui/gfx/geometry",
   ]
 
   defines = [ "MEDIA_IMPLEMENTATION" ]
 
   sources = [
     "active_loader.cc",
@@ skipping 31 matching lines @@
 }
 
 test("media_blink_unittests") {
   deps = [
     ":blink",
     "//base",
     "//base/test:test_support",
     "//cc",
     "//cc/blink",
     "//media",
+    "//media:shared_memory_support",
     "//media/base:test_support",
     "//net",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/public:blink",
     "//ui/gfx/geometry",
     "//ui/gfx:test_support",
     "//url",
   ]
 
   sources = [
     "buffered_data_source_host_impl_unittest.cc",
     "buffered_data_source_unittest.cc",
     "buffered_resource_loader_unittest.cc",
     "cache_util_unittest.cc",
     "mock_webframeclient.h",
     "mock_weburlloader.cc",
     "mock_weburlloader.h",
     "run_all_unittests.cc",
     "test_response_generator.cc",
     "test_response_generator.h",
     "video_frame_compositor_unittest.cc",
     "webaudiosourceprovider_impl_unittest.cc",
   ]
 }