GN: Make content_shell and webkit_unit_tests work in component build

content/renderer/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.
 
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//content/renderer/renderer.gni")
 
 source_set("renderer") {
   # Only targets in the content tree can depend directly on this target.
@@ skipping 131 matching lines @@
   }
 
   if (enable_plugins) {
     sources += rebase_path(
         content_renderer_gypi_values.private_renderer_plugin_sources,
         ".", "//content")
     deps += [
       "//ppapi:ppapi_host",
       "//ppapi:ppapi_proxy",
       "//ppapi:ppapi_shared",
+      "//third_party/libyuv",
     ]
   } else {
     # These files are in the WebRTC list, but also require plugins.
     if (enable_webrtc) {
       sources -= [
         "media/webrtc/video_destination_handler.cc",
         "media/webrtc/video_destination_handler.h",
       ]
     }
   }
 
   if (enable_plugins && enable_webrtc) {
     sources += rebase_path(
         content_renderer_gypi_values.private_renderer_plugin_webrtc_sources,
         ".", "//content")
   }
+
+  if (printing_mode == 1) {
+    deps += [ "//printing" ]
+  }
 }