Extract re-usable InitializeMediaFoundation()

media/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/android/config.gni")
 import("//build/config/arm.gni")
 import("//build/config/features.gni")
 import("//build/config/linux/pkg_config.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
@@ skipping 366 matching lines @@
       "video/capture/linux/v4l2_capture_delegate_multi_plane.cc",
       "video/capture/linux/v4l2_capture_delegate_multi_plane.h",
     ]
   }
 
   if (is_ios) {
     deps += [ "//media/base/mac" ]
   }
 
   if (is_win) {
+    deps += [ "//media/base/win" ]
     libs += [
       "mf.lib",
       "mfplat.lib",
       "mfreadwrite.lib",
       "mfuuid.lib",
     ]
   }
 
   if (proprietary_codecs) {
     sources += [
@@ skipping 338 matching lines @@
       "//media/base:test_support",
       "//media/test:pipeline_integration_tests",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/ffmpeg",
       "//ui/gfx/geometry",
       "//ui/gfx:test_support",
     ]
   }
 }