Plugin Power Saver: Add comprehensive browser tests.

ppapi/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.
 
 copy("copy_test_files") {
   visibility = [ ":*" ]
   sources = [
     # Keep "test_case.html.mock-http-headers" with "test_case.html".
     "tests/ppapi_nacl_tests_newlib.nmf",
     "tests/test_case.html",
@@ skipping 26 matching lines @@
   include_dirs = [ "lib/gl/include" ]
 
   deps = [
     "//ppapi/cpp",
     "//ppapi/shared_impl",
     ":copy_test_files",
     ":copy_test_files2",
   ]
 }
 
+shared_library("power_saver_test_plugin") {
+  sources = [
+    "tests/power_saver_test_plugin.cc",
+    "tests/test_utils.cc",
+  ]
+
+  deps = [
+    "//ppapi/cpp",
+    "//ppapi/shared_impl",
+  ]
+}
+
 test("ppapi_unittests") {
   sources = [
     "host/resource_message_filter_unittest.cc",
     "proxy/device_enumeration_resource_helper_unittest.cc",
     "proxy/file_chooser_resource_unittest.cc",
     "proxy/file_system_resource_unittest.cc",
     "proxy/flash_resource_unittest.cc",
     "proxy/interface_list_unittest.cc",
     "proxy/mock_resource.cc",
     "proxy/mock_resource.h",
@@ skipping 61 matching lines @@
 
 executable("pepper_hash_for_uma") {
   sources = [
     "tools/pepper_hash_for_uma.cc",
   ]
 
   deps = [
     "//base",
   ]
 }