Plugins: Move Prerender tests to PPAPI and some refactoring.

ppapi/shared_impl/BUILD.gn

 # Copyright 2015 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.
 
 component("shared_impl") {
   output_name = "ppapi_shared"
 
   sources = [
     "array_var.cc",
     "array_var.h",
@@ skipping 83 matching lines @@
     "resource_tracker.cc",
     "resource_tracker.h",
     "resource_var.cc",
     "resource_var.h",
     "scoped_pp_resource.cc",
     "scoped_pp_resource.h",
     "scoped_pp_var.cc",
     "scoped_pp_var.h",
     "socket_option_data.cc",
     "socket_option_data.h",
-    "test_harness_utils.cc",
-    "test_harness_utils.h",
     "thread_aware_callback.cc",
     "thread_aware_callback.h",
     "time_conversion.cc",
     "time_conversion.h",
     "tracked_callback.cc",
     "tracked_callback.h",
     "url_request_info_data.cc",
     "url_request_info_data.h",
     "url_response_info_data.cc",
     "url_response_info_data.h",
@@ skipping 86 matching lines @@
   deps = [
     "//base/test:test_support",
     "//ipc",
     "//ipc:test_support",
     "//ppapi/proxy",
     "//ppapi/shared_impl",
     "//testing/gmock",
     "//testing/gtest",
   ]
 }