Add base_unittests to win8 trybot. Fix PEImage tests.

base/win/pe_image_test.cc

Index: base/win/pe_image_test.cc
diff --git a/base/win/pe_image_test.cc b/base/win/pe_image_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..e374598ada750f1d41907807a173f4ba933d18e7
--- /dev/null
+++ b/base/win/pe_image_test.cc
@@ -0,0 +1,31 @@
+// 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.
+
+#include <windows.h>
+
+#include <cfgmgr32.h>
+#include <shellapi.h>
+
+extern "C" {
+
+__declspec(dllexport) void ExportFunc1() {
+  // Call into user32.dll.
+  HWND dummy = GetDesktopWindow();
+  SetWindowTextA(dummy, "dummy");
+}
+
+__declspec(dllexport) void ExportFunc2() {
+  // Call into cfgmgr32.dll.
+  CM_MapCrToWin32Err(CR_SUCCESS, ERROR_SUCCESS);
+
+  // Call into shell32.dll.
+  SHFILEOPSTRUCT file_operation = {0};
+  SHFileOperation(&file_operation);
+
+  // Call into kernel32.dll.
+  HANDLE h = CreateEvent(NULL, FALSE, FALSE, NULL);
+  CloseHandle(h);
+}
+
+}  // extern "C"