Add base_unittests to win8 trybot. Fix PEImage tests.

base/BUILD.gn

 # Copyright (c) 2013 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")
 
 if (is_android) {
   import("//build/config/android/rules.gni")
 }
@@ skipping 1117 matching lines @@
 source_set("protect_file_posix") {
   sources = [
     "files/protect_file_posix.cc",
   ]
 
   deps = [
     "//base",
   ]
 }
 
+if (is_win) {
+  shared_library("pe_image_test") {
+    sources = [
+      "win/pe_image_test.cc",
+    ]
+    ldflags = [
+      "/DELAYLOAD:cfgmgr32.dll",
+      "/DELAYLOAD:shell32.dll",
+      "/SUBSYSTEM:WINDOWS",
+    ]
+    libs = [
+      "cfgmgr32.lib",
+      "shell32.lib",
+    ]
+  }
+}
+
 test("base_unittests") {
   sources = [
     "android/application_status_listener_unittest.cc",
     "android/content_uri_utils_unittest.cc",
     "android/jni_android_unittest.cc",
     "android/jni_array_unittest.cc",
     "android/jni_string_unittest.cc",
     "android/path_utils_unittest.cc",
     "android/scoped_java_ref_unittest.cc",
     "android/sys_utils_unittest.cc",
@@ skipping 287 matching lines @@
     deps += [ "//third_party/libevent" ]
   }
 
   if (is_android) {
     deps += [ "//testing/android:native_test_native_code" ]
     set_sources_assignment_filter([])
     sources += [ "debug/proc_maps_linux_unittest.cc" ]
     set_sources_assignment_filter(sources_assignment_filter)
   }
 
+  if (is_win) {
+    deps += [ ":pe_image_test" ]
+  }
+
   # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   configs += [ "//build/config/compiler:no_size_t_to_int_warning" ]
 }
 
 if (is_android) {
   # GYP: //base.gyp:base_jni_headers
   generate_jni("base_jni_headers") {
     sources = [
       "android/java/src/org/chromium/base/ApplicationStatus.java",
       "android/java/src/org/chromium/base/BuildInfo.java",
@@ skipping 87 matching lines @@
 
   # GYP: //base.gyp:base_java_unittest_support
   android_library("base_java_unittest_support") {
     deps = [
       ":base_java",
     ]
     java_files =
         [ "test/android/java/src/org/chromium/base/ContentUriTestUtils.java" ]
   }
 }