Support Visual C++ PGO in Ninja generator

test/win/linker-flags/inline_test_main.cc

Index: test/win/linker-flags/inline_test_main.cc
===================================================================
--- test/win/linker-flags/inline_test_main.cc	(revision 0)
+++ test/win/linker-flags/inline_test_main.cc	(revision 0)
@@ -0,0 +1,15 @@
+// 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>
+#include <stdio.h>
+
+#pragma intrinsic(_ReturnAddress)
+
+int main() {
+  if (IsFunctionInlined(_ReturnAddress()))
+    puts("==== inlined ====\n");
+}