Address more TOOD(GYP) in GN build.

media/gpu/BUILD.gn

Index: media/gpu/BUILD.gn
diff --git a/media/gpu/BUILD.gn b/media/gpu/BUILD.gn
index 09f394371349fd0050ff9f5c0c9cfbfe7091d838..5ca89e27844842164c242de3dd2d768b2d215e0d 100644
--- a/media/gpu/BUILD.gn
+++ b/media/gpu/BUILD.gn
@@ -343,8 +343,6 @@ component("gpu") {
       "/DELAYLOAD:mf.dll",
       "/DELAYLOAD:mfplat.dll",
     ]
-
-    # TODO(GYP): extract_xinput action.
   }
 
   if (use_x11) {
@@ -352,9 +350,12 @@ component("gpu") {
   }
 }
 
-if (is_android || is_chromeos) {
-  # TODO(GYP): Port Windows logic.
+if (is_win || is_android || is_chromeos) {
   test("video_decode_accelerator_unittest") {
+    sources = [
+      "video_accelerator_unittest_helpers.h",
+    ]
+
     deps = [
       ":gpu",
       "//base",
@@ -368,15 +369,23 @@ if (is_android || is_chromeos) {
       "//ui/gl",
       "//ui/gl:test_support",
     ]
+
     configs += [ "//third_party/khronos:khronos_headers" ]
     if (is_chromeos && target_cpu != "arm") {
       configs += [ "//third_party/libva:libva_config" ]
     }
-    sources = [
-      "video_accelerator_unittest_helpers.h",
-    ]
+
     if (is_android) {
       sources += [ "android_video_decode_accelerator_unittest.cc" ]
+      deps += [
+        "//gpu:test_support",
+        "//media/base/android",
+        "//media/base/android:media_java",
+        "//media/capture/video/android:capture_java",
+        "//mojo/public/c/system:for_shared_library",
+        "//testing/gmock",
+        "//ui/android:ui_java",
+      ]
     } else {
       sources += [
         "rendering_helper.cc",
@@ -385,17 +394,15 @@ if (is_android || is_chromeos) {
       ]
     }
 
-    if (is_android) {
+    if (is_win) {
+      # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
+      configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
       deps += [
-        "//gpu:test_support",
-        "//media/base/android",
-        "//media/base/android:media_java",
-        "//media/capture/video/android:capture_java",
-        "//mojo/public/c/system:for_shared_library",
-        "//testing/gmock",
-        "//ui/android:ui_java",
+        "//third_party/angle:libEGL",
+        "//third_party/angle:libGLESv2",
       ]
     }
+
     if (is_chromeos && use_ozone) {
       deps += [
         "//ui/display",  # Used by rendering_helper.cc