Support Visual C++ PGO in Ninja generator

test/win/linker-flags/inline_test.cc

Index: test/win/linker-flags/inline_test.cc
===================================================================
--- test/win/linker-flags/inline_test.cc	(revision 0)
+++ test/win/linker-flags/inline_test.cc	(revision 0)
@@ -0,0 +1,12 @@
+// Copyright (c) 2013 Google Inc. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "inline_test.h"
+
+#include <intrin.h>
+#pragma intrinsic(_ReturnAddress)
+
+bool IsFunctionInlined(void* caller_return_address) {
+  return _ReturnAddress() == caller_return_address;
+}