Support mixed allocation in browser vs subprocesses...

base/allocator/allocator_shim.h

+// Copyright (c) 2011 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.
+
+#ifndef BASE_ALLOCATOR_ALLOCATOR_SHIM_H_
+#define BASE_ALLOCATOR_ALLOCATOR_SHIM_H_
+
+namespace base {
+namespace allocator {
+
+// Resets the environment variable CHROME_ALLOCATOR to specify the choice to
+// be used by subprocesses.  Priority is given to the current value of
+// CHROME_ALLOCATOR_2 (if specified), then CHROME_ALLOCATOR (if specified), and
+// then a default value (typically set to TCMALLOC).
+void SetupSubprocessAllocator();
+
+}  // namespace base.
+}  // namespace allocator.
+
+#endif   // BASE_ALLOCATOR_ALLOCATOR_SHIM_H_