Remove more targets from GN Windows build.

ui/snapshot/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/ui.gni")
 import("//testing/test.gni")
 
 component("snapshot") {
   sources = [
     "screenshot_grabber.cc",
@@ skipping 34 matching lines @@
   if (use_aura) {
     deps += [
       "//ui/aura",
       "//ui/compositor",
     ]
   } else {
     sources -= [ "snapshot_aura.cc" ]
   }
 }
 
-test("snapshot_unittests") {
-  sources = [
-    "snapshot_aura_unittest.cc",
-    "snapshot_mac_unittest.mm",
-    "test/run_all_unittests.cc",
-  ]
+if (!is_win || link_chrome_on_windows) {
+  test("snapshot_unittests") {
+    sources = [
+      "snapshot_aura_unittest.cc",
+      "snapshot_mac_unittest.mm",
+      "test/run_all_unittests.cc",
+    ]
 
-  deps = [
-    ":snapshot",
-    "//base",
-    "//base/allocator",
-    "//base/test:test_support",
-    "//skia",
-    "//testing/gtest",
-    "//ui/base",
-    "//ui/compositor:test_support",
-    "//ui/gfx",
-    "//ui/gfx/geometry",
-    "//ui/gl",
-  ]
+    deps = [
+      ":snapshot",
+      "//base",
+      "//base/allocator",
+      "//base/test:test_support",
+      "//skia",
+      "//testing/gtest",
+      "//ui/base",
+      "//ui/compositor:test_support",
+      "//ui/gfx",
+      "//ui/gfx/geometry",
+      "//ui/gl",
+    ]
 
-  if (use_aura) {
-    deps += [
-      "//ui/aura:test_support",
-      "//ui/compositor",
-      "//ui/compositor:test_support",
-      "//ui/wm",
-    ]
-  } else {
-    sources -= [ "snapshot_aura_unittest.cc" ]
+    if (use_aura) {
+      deps += [
+        "//ui/aura:test_support",
+        "//ui/compositor",
+        "//ui/compositor:test_support",
+        "//ui/wm",
+      ]
+    } else {
+      sources -= [ "snapshot_aura_unittest.cc" ]
+    }
   }
 }