scheduler: Always create a real scheduler in unit tests

content/test/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/chrome_build.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//build/module_args/v8.gni")
 import("//testing/test.gni")
@@ skipping 38 matching lines @@
 
   if (!is_ios) {
     sources =
         rebase_path(content_tests_gypi_values.test_support_content_sources,
                     ".",
                     "//content")
 
     public_deps += [ "//third_party/WebKit/public:blink" ]
     deps += [
       "//components/scheduler:scheduler",
+      "//components/scheduler:test_support",
       "//content/browser/speech/proto",
       "//content/public/child",
       "//content/gpu",
       "//content/public/plugin",
       "//content/public/renderer",
       "//content/public/utility",
       "//content/shell:pak",
       "//cc",
       "//cc:test_support",
       "//ipc/mojo",
@@ skipping 617 matching lines @@
       "//gpu/blink",
       "//testing/gtest",
       "//third_party/WebKit/public:blink",
       "//ui/base",
       "//ui/gfx",
       "//ui/gfx/geometry",
       "//ui/gl",
     ]
   }
 }