Add partitionsOutOfMemoryUsingXXX to know Blink memory usage from OOM crash reports

Source/wtf/Alias.cpp

Index: Source/wtf/Alias.cpp
diff --git a/Source/wtf/Alias.cpp b/Source/wtf/Alias.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..6a3d1a840664997d311289591c5a0a3db19aeb4a
--- /dev/null
+++ b/Source/wtf/Alias.cpp
@@ -0,0 +1,24 @@
+// Copyright (c) 2011 The Chromium Authors. All rights reserved.

[haraken, 2015/09/04 05:22:45]

2015

[tasak, 2015/09/04 06:12:06]

Since I copied //base/debug/alias.cc, I think, we should not modify copyright.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "config.h"
+#include "wtf/Alias.h"
+
+// TODO(tasak): This code is copied from //base/debug/alias.cc.
+// If Blink is allowed to use //base/debug, remove this code and use //base/debug.
+namespace WTF {
+
+#if COMPILER(MSVC)
+#pragma optimize("", off)
+#endif
+
+void alias(const void* var)
+{
+}
+
+#if COMPILER(MSVC)
+#pragma optimize("", on)
+#endif
+
+} // namespace WTF